您现在的位置:首页>外文期刊>Journal of Environmental Science and Health. A

期刊信息

  • 期刊名称:

    Journal of Environmental Science and Health. A

  • 中文名称: 环境科学与健康杂志。一个
  • 刊频:
  • ISSN: 1093-4529
  • 出版社: -
  • 简介:

年度选择

GENGDUO>>

  • 排序:
  • 显示:
  • 每页:
全选(0
<1/6>
106条结果
  • 机译 加热油中的氮化合物分布
    • 作者:Cassi L. Walls;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:A Number 1 fuel heating oil was studied for the organo-nitrogen content. The organo-nitrogen compounds were isolated by mild acid extraction followed by silical gel adsorption. Three extracts were studied - a basic nitrogen extract in methylene chloride, a nonbasic nitrogen extract in methyl alcohol and a nonbasic nitrogen extract in methylene chloride. The major constituents of each extract were identified by GC/MS. There were seven major classes of nitrogen compounds detected in each extract. There compounds included alkyl-substituted carbazoles, indoles, pyrazines, pyridines, pyrroles, quinolines and tetrahydroquinolines. The nitrogen content and distribution was compared to both tar-sands and shale derived fuels.
  • 机译 地下砂/黏土界面处油气的运输和生物分解
    • 作者:Giles Kyle;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:The objective of this research was to evaluate the transport and biodegradation of a NAPL (hexadecane) in layered soil. The results indicate that there was limited removal of hexadecane from soil by pumping. Biodegradation of hexadecane occurred throughout the reactor that was amended with nitrogen and phosphorus. Enhanced biodegradation of hexadecane at the soil textural interfaces was not observed. Bioremediation systems located in layered soil must be carefully designed to encourage complete remediation throughput the contaminated zone.
  • 机译 活性炭对HFC-134A吸附的预测和实验验证
    • 作者:S.H. Lin;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:Theoretical and experimental investigations were conducted on the adsorption characteristics of 1,1,1,2-terafluoroethane (HFC-134a) by granular and extruded activated carbons (GAC and EAC). HFC-134a is currently regarded as an excel-lent replacement for CFC-12 (Freon 12), a refrigenant previously used in all automobiles and many cooling systems. Experimental results of column adsorption were employed to verify the theoretical bread through curves generated from the pro-posed model and excellent model fit of the breakthrough curves of HCFC-134a adsorption were obtained. Investigations were also made on the effects of gas velocity, inlet HFC-134a concentration and operating temperature on the adsorption efficiency.
  • 机译 使用氯膦去除镉
    • 作者:Rumman Sobhan;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:This work presents results of a feasibility study for removal of heavy metal contaminants from water using aquatic plants. A local strain of Cladophora was used to remove cadmium from a synthetic wastewater. The algae were grown in a laboratory using natural water under the following conditions: pH controlled between 7.8 and 9.0, 18 hrs of light/day, occasional application of plant fertilizer. Cadmium was added to the water in two modes - one time addition of a large dose of heavy metal (concentration 5 mg Cd~+2/L), and several small, equal doses (each 1 mg Cd~+2/L), added everyday. Experiments were replicated to verify reproducibility. In all sets, removal of cadmium (in a range of 8 days) varied from 86/100 to 96/100, based on the residual concentration in the water. Percentage of removal calculated from digestion of biomass closely approximated these values (within 20/100). High degrees of removal were observed in the first 48 hours. Concentration factors ranged from 1340 to 16,400. Concentration of cadmium (Cd~+2) was found to be as high as 1.64/100 of the dried cellmass. The Relative Growth, RG (Final Fresh Weight/Initial fresh Weight) indicated good growth of plant biomass, albeit constant exposure to cadmium.
  • 机译 地表水直接影响下地下水源的影响因素
    • 作者:F.N. Nnadi;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:The objective of this study was to identify preliminary and other factors that could be used to screen surface waters before embarking on the expensive laboratory procedure. In order to determine which public water systems that are groundwater under the direct influence (GWUDI), a total of 62 wells at public water supplies suspected of being (GWUDI) were investigated. The wells sampled were distributed acorss seven counties in the Central Florida region. Water samples were collected and analyzed at the Department of Health Laboratory in Tampa, Florida using the Micorscopic Particulate Analysis (MPA). The study investigated the well and hydrogeologic characteristics, and land use within the vicinity of the well locations. The results showed that 13/100 of the wells sampled were in the high-risk range while 29/100 and 58/100 of the wells sampled were within the moderate and low risk ranges, respectively. It was also observed that some well characteristics and the hydrogeology of an area generally influence the MPA risk index. Karst regions were observed to be susceptible to a higher risk than sandy areas. The results also suggested that older wells tend to have higher risk index.
  • 机译 土壤重金属污染模式分析的条件模拟,克里格法和趋势面分析的比较
    • 作者:X.J. Wang;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:Conditional simulation, kriging and trend surface analysis techniques have been widely used in the studies of spatial features of variables because of their characteristics of explaining spatial distributions and structures of variables. The purpose of this study is to make an experiment in applying these techniques for illustrating spatial distribution and structural characteristics of heavy metals (Cu and Pb) in agricultural soil irrigated with wastewater in the eastern outlying farming areas of Beijing. Results show that with the rapid development of computer technique in recent years, both the kriging and conditional simulation techniques can play better roles in providing more precise solutions to soil pollution issue than the trend surface analysis. In comparison, kriging interpolation can be applied to find out the optimum estimation, while condition simulation is favorable for identifying the spatial variety and the fluctuation pattern of the pollutants in the soil, With feasible utilization, both these methods could be powerful tools in soil pollution study, including determining the pollution area, evaluating the pollution level and identifying the pollution sources which would contribute to successive planning and remediation processes.
  • 机译 乙酸溶液中二氨基二碳酸铜的浸出和稳定特性。
    • 作者:Ming-Sheng Ko;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:The leaching and stabilizing characteristics of synthetic copper diethyl dithiocarbamate (Cu-DDTC) under 1 N acetic acid solution were characterized using semi-dynamic leaching test (SDLT), ultraviolet-visible spectrophotometer (UV-visible), X-ray diffractometer (XRD), Fourier transform infrared spectrophotometer (FTIR), and scanning electron microscopy (SEM) techniques. The analyses of leached species of leaching solution by SDLT and UV-visible indicated that the degree of degradation of various elements from the Cu-DDTC complex could be classified as: N (25/100)> S (20/100) > Cu(0.7/100) and no dithiocarbamate species in the liquid phase were detected. The copper species of insoluble Cu-DDTC complexes were much more stable than those of copper solidification in cementitious matrix. The investigation of crystallinity showed that there were two unidentifiable peaks present in the XRD pattern of the leached Cu-DDTC complex that might be attributed to new chemical interactions. The spectra obtained by FTIR analyses obviously showed that the major functional groups, such as C-N, S-C, C=S, Cu-S and C-H groups, were both present in the unleached and leached Cu-DDTC complex. Microstructural analyses by SEM revealed that the unleached and leached Cu-DDTC complexes had the same morphologies, but the grain size of the leached Cu-DDTC complex is much larger and compact than that of the unleached complex. Thus, it was suggested that the leaching and stabilizing characteristics of the insoluble Cu-DDTC complexes consisted of the dissolution and decomposition of Cu-DDTC and the chelatin
  • 机译 在旧的城市固体废物焚化炉附近监测二恶英和呋喃:植被的时间变化
    • 作者:J.L. Domingo;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:To determine the temporal variation in the levels of polychlorinated dibenzop-dioxins (PCDDs) and dibenzofurans (PCDFs) in vegetation grown near an old municipal solid waste incinerator (Montcada, Barcelona, Spain), 24 herbage samples were collected at the same sampling points in which samples has been taken one year before. While in the previous survey PCDD/F concentrations ranged from 1.07 to 3.05 ng I-TEQ/kg (dry matter) (median value: 1.88 ng I-TEQ/kg, mean value: 1.92 ng I-TEQ/kg), in the current samples PCDD/F levels ranged from 0.75 to 1.95 ng I-TEQ/kg (dry matter) median value: 1.27 ng I-TEQ/kg, mean value: 1.30 ng ITEQ/kg). An individual comparison between PCDD/F concentrations in samples collected in both studies shows a decrease in all the sampling points with an average reduction of 32.3/100. This reduction can be due to general abatement actions for PCDD/F emissions.
  • 机译 石灰处理的蒙脱土对锌的吸附
    • 作者:Tsau-Don Tsai;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:In this research, lime-treated montmorillonite clay is used to adsorb Zn(II) in a wide range of Zn(II) concentrations. Batch test results show that the adsorption of Zn(II) by montmorillonite appears to be dominated by different adsorption mechanisms. At low Zn(II) concentrations, chemisorption affects the amount of Zn(II) adsorbed by montmorillonite. When lime is added, physisorption becomes increasingly important. At high Zn(II) concentrations, physisorption is the dominnt mechanism for Zn(II) adsorption. Lime also enhances the ability of montmorillonite to adsorb Zn(II) at low initial Zn(II) concentrations, and does not significantly affect the ability of montomorillonite to adsorb Zn(II) at high initial Zn(II) concentrations. In chemisorption, montmorillonite provides cation exchange sites for the adsorption of Zn(II). In physisorption, montmorillonite acts as not only numcleation center to adsorb zinc hydroxide-oxides but also helps to coagulate the zinc hydroxide-oxides. Lime-treated clay can therefore be an effectively used to adsorb metals such as zinc even at very high metal concentrations. The significance of these findings is in the design of landfill liner. A mixture of montmorillonite (bentonite) clay and lime is shown to have characteristics that would make this material a superior landfill liner. The lime-treated clay has low hydraulic conductivity, enhanced metal removal capability, and better resistance to penetration by sharp objects.
  • 机译 矿区附近地下水中重金属的评价及重金属污染指数的发展
    • 作者:B. Prasad;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:The concentration of Seven heavy metals (copper, Cadmium, iron, chromium, manganese, lead and zinc) have been evaluated at twenty important ground water sampling stations at Dhanbad town for three seasons of the year. The concentration of heavy metals in general was found to be below the permissible levels although concentration of iron and manganese was found above the permissible limits at a few stations. These data have were for the calculation of Heavy Metal Pollution Index (HPI). The HPI of ground water was found to be far below the index limit of 100 pointing to the fact that the ground water was not polluted with respect of heavy metals in spite of the prolific growth of mining and allied industrial activities near the town.
  • 机译 用于可重复生化需氧量估算的微生物组合物的配制和标准化
    • 作者:Rita Kumar;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第1期
    摘要:A number of microorganisms were isolated from sewage. Biochemicla oxygen demand (BOD) analysis was carried out by using these isolated microorganisms as a seed material with glucose-glutamic acid (GGA) as a reference standard. Based on the BOD values, a defined microbial composition was formulated by using these isolates. This formulated microbial composition was standardized for reproducible BOD estimation by using four synthetic and four industrial samples. The results showed reproducibility of the BOD values within an acceptable limit. The BOD results are comparable with sewage which is used as a seed material in conventional BOD analysis. Storage stability studies of formulated microbial composition t different temperatures showed the maximum stability at 4degC. Such microbial composition offers better opportunity to be used as a standard seed inoculum in the BOD test.
  • 机译 东北工业化地区被动采样器的低温SO〜2采样
    • 作者:Kato;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:Due to its reliability, simple and portable structure and low costs, the passive sampler is the ideal measuring device for developing countries. In spite of this, there has been no reporting on its reliability in extremely low temperate areas such as those associated with Northeastern China. The measuring of SO_2 by passive samplers was attempted at extremely low temperatures in the heavy industrialized area of Shenyang, China from December 25 to 28, 1995.
  • 机译 气化过程中化学废物替代物的破坏和随后的磷分布
    • 作者:R. Scott Martin;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:The ChemChar process enables gasification of a wide variety of liquid and sludge wastes on a readily handled macroporous granular char. The process produces combustible gas products, largely retains metals and halides on the char matrix, and effectively destroys organohalides without producing SOx, NOx, chlorinated dibenzodioxins or chlorinated dibenzofurans (which can occur with incineration). To study chemical warfare agent wastes under gasification conditions, the destruction removal efficiencies (DRE) of the chemical warfare surrogates parathion and diethylchlorothiophosphate were determined. DREs of > 99.99998/100 and >99.99998/100 were found for parathion and diethylchlorithiophosphate, respectively. Additionally, a study of the distribution of radiolabeled phosphorus (P-32) after gasification of parathion and tributylphosphate showed essentially complete retention of the phosphorus within the gasification system. This study illustrates that the ChemChar gasification process holds significant promise as an alternative to incineration for the safe and complete destruction of chemical warfare agent wastes.
  • 机译 活性污泥过程中的温度相互作用
    摘要:The impact of temperature on biokinetic constrants used in the design and operation of activated sludge treatment facilities is presented. Three temperatures (10 deg C, 20 deg C, and 30 deg C) are evaluated for their impact on substrate removal, biomass concentration, waste sludge production,a nd oxygen requirements. The biokinetic equations developed by Lawrence and McCarty (1970 ) are utilized.
  • 机译 错流中膜滤池处理乳品废水。
    • 作者:D.V.S. Murthy;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:The treatment of synthetic dairy wastewater was carried out using cross flow medium trickling filter of specific surface area 243 m~2/m~3. The operating variables in this study were hydraulic and organic loading rtes. The hydraulic loadings employed in this study were 5,9,13 and 17 m~3/m~2.d for the influent COD concentrations of 427 to 1384 mg/1. It was observed that the relationship between organic removal rate and organic loading rate showed two regions of linear behaviour with the point of inflection at an organic loading rate of 26 g COD/m~2.d. Kornegay model was used to evaluate the kinetic coefficients for the system. The results were found to be satisfactory.
  • 机译 沉积物中油污染简单监测技术的发展
    • 作者:Aarif H. El-Mubarak;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:In this study an attempt was made to develop a reliable method for the estimation of total oil hydrocarbons in sediments. The method developed involved an HPLC technique using a group separation. The oil was separated into saturates, aromatics and polar compounds after removing the asphaltenes gravimetrically. Determination was carried out by quantifying the aromatics and polar hydrocarbon fractions of a reference oil (Arabian light), against which the unknown was assayed. Linear calibration curves were obtained for the aromatics and polar fractions over the range 1-12 mg/mL and 0.1-1 mg/mL, respectively. The reproducibility for the aromatics fraction was acceptable with a maximum error of 2.8/100 (n=3) and recovery rate was 89.3/100 (n=3). Similar results were obtained for the polar fraction. The method was compared with an existing Spectrofluormetric method.
  • 机译 酸性染料系统的电化学处理:甲基亚硫酸氢钠添加到ANDCO系统中
    摘要:Electrochemical treatment was shown to be successful in removing from solution two acid dyes used in the carpet industry. The Andco Environmental Processes laboratory scale iron electrode system was shwon to decolorize solutions of Acid Red 337 (azo) and Acid Blue 40 (anthraquinone). High performance liquid chromatography (HPLC) with diode-array detection was used to quantify dye removal and provide qualitative information about degradation products. Both degradation and adsorption contribute to removal of Acid Red 337; adsorption appears to be the primary mechanism responsible for removal of Acid Blue 40. Addition of sodium meta-bisulfite to the Andco system was shown to enhance removal of both dyes. It is postulated that the dithionite and/or sulfoxylate radical anion that may be formed during the reduction of bisulfite is responsible for the more efficient cleavage of the azo linkage in Acid Red 337, causing further degradation. The mechanism for enhanced removal of Acid Blue 40 by addition of meta-bisulfite is most probably due to reduction of the anthrquinone dye to hydroquinone, which in its leuco form adsorbs better to the iron solids generated in the electrochemical treatment process.
  • 机译 连续床柱中海藻酸钙,琼脂糖和固定化寻常小球藻中铬(VI)的生物形态特征的比较研究
    • 作者:Z. Aksu;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:A comparative biosorption of chromium (VI) ions to Ca-alginate and agarose biopolymers and immobilized C. vulgaris, a green alga was investigated. The experiments were carried out in a packed bed column operated in a continuous mode, as a function of the flow rate and inlet chrominum(VI) ion concentration. The removal percentage of chromium(VI) ions related to the effluent volumes were also determined. Agarose and agarose - algae systems showed a rapid chromium(VI) uptake initially while chromium (VI) ion adsorption to Ca-alginate and Ca-alginante was limited initially by the diffusion of the solute through the pores. Ca-alginate was not a good biosorbent for chromium(VI) ions and immobilization of C. vulgaris to Ca-alginate only marginally increased the biosorption yield. However, agarose and agarose immobilized C. vulgaris increased the biosorption capacity. Total chromium(VI) removal by agarose and agarose-C. vulgaris systems were higher than that of Ca-alginate and Ca-alginate immobilized C. vulgaris at the same time interval.
  • 机译 制革废水的表征以及TDS,BOD和COD之间的关系
    • 作者:S. Balasubramanian;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:The five important parameters to characterize tannery effluents viz. total chromium sulfide, TDS, BOD and COD were determined for samples obtained from different streams as well as for composite liquor. The remedial measures to contain their pollution load on the treatment plant are discussed. The correlation between TDS and BOD, TDS and COD for the these samples are also reported.
  • 机译 引入假单胞菌突变体对豆类根际微球菌的影响
    • 作者:Jacek Kozdroj;
    • 刊名:Journal of Environmental Science and Health. A
    • 1999年第2期
    摘要:Mutants of pseudomonas fluorescens were used for inoculation of bean (Phaseolus vulgaris L.) at different growth stages to assess their impact on indigenous culturable heterotrophic bacteria in the rhizoshere. Survival of inoculants, changes in numbers of the indigenous bacteria and their physiological state, and microbial community structures were determined using a simple agar plating method. The results showed that survival of introduced P. fluorescens mutants varied according to the growth stage of bean inoculated. However, overall, the mutants survived better in the rhizoshere with time, when they were inoculated on seeds. In contrast to some authors, the effect of mutants introduced was observed in the case of indigenous bacterial numbers and microbial community structures. Overal, no significant treatment effect was observed, when changes n values of kinetic parameters of colony formation were considered. Generally, cfu numbers, physiological state and community structure of indigenous microflora in the rhizoshere were depended on the effect of the interaction between the inoculants, the time after the introduction and the growth stage of plant.
  • 联系方式:010-58892860转803 (工作时间) 18141920177 (微信同号)
  • 客服邮箱:kefu@capm.ac.cn
  • 京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-1 六维联合信息科技(北京)有限公司©版权所有
  • 客服微信
  • 服务号
亚洲综合香蕉在线视频壹晚上要了小姑娘三次日本A级作爱片免费人做人爱视频gratis vi eos欧美最新亚洲m码 欧洲s码|亚洲第一欧美的日产迷人的保姆5線觀高清 日本 v 影_亚洲 v 影_亚洲 a 电_欧美a电 国产a影_欧美a电_日本v影_亚洲v影 国产久久亚洲美女久久-国产亚洲日韩欧美看国产 午夜国产免费视频亚洲-在线欧美 精品 第1页 免费观看三级片_免费国产Av_免费国产黄片 亚洲 自拍 校园 欧美 日韩-久青草国产在线视频 亚洲 另类 小说 国产精品-香蕉国产精品偷在线观看 国产亚洲精品免费视频-国产亚洲日韩欧美看国产 国产亚洲精品香蕉视频播放-国产免费三级a在线观看 欧美图***另类偷偷自拍-亚洲 中文 字幕 国产 综合 国产亚洲日韩欧美看国产-99国产这里有精品视频 欧美 亚洲 日韩 国产 综合-国产亚洲日韩欧洲一区 五月丁香六月综合欧美-成长在线视频免费观看 免费视频一区二区三区-国语自产拍在线视频中文 欧美免费全部免费观看-亚洲 日韩 中文 综合av 国产国产成年在线视频区-色天天综合色天天久久婷婷 国产在线视频播放社区-五月丁香六月综合缴情基地 欧美亚洲综合另类无码-日本成本人片无码免费视频 五月丁香六月综合欧美-日本成本人片视频免费 亚洲 欧美 国产 综合五月天-亚洲欧美日本国产高清 精品AV综合导航-日本在线看片免费视频 日本欧美日韩中文亚洲-日本三级无码中文字幕 在线观看免费视频日本高清-成年大片免费视频播放 不卡本日Av网站_日本av网站-夜色撩人手机免费观看 国产Av在线看的_韩国日本免费不卡在线_免费aV 岛国a视频在线观看-三分钟免费观看视频 亚洲伊人***网站-国产免费三级a在线观看 大香中文字幕伊人久热大-伊人成综合网伊人222- 免费A级毛片_中国A级毛片_午夜国产免费视频亚洲-在线欧美 精品 第1页_a片在线观看 三级a片_成 三级 观看_人 三级 写真人体 三级真人牲交 free欧美高清猪马牛 我和狗做了4年都没事 午夜国产免费视频亚洲-在线欧美 精品 第1页 bt种子搜索 同房姿势108种 使劲里面痒想要 年轻的母亲线2免费 午夜国产免费视频亚洲-在线欧美 精品 第1页 爸爸快点我坚持不住了 午夜国产免费视频亚洲-在线欧美 精品 第1页 熟透的岳 熟妇的荡欲 午夜国产免费视频亚洲-在线欧美 精品 第1页 老熟妇乱子伦视频 亚洲五月六月丁香缴情 e欧美性情一线免费http 把你干到疼得下不了床 女人床上活好是啥样的 床戏 床 戏 三个人在一个床上做了 精品国产自在现线拍 免费A级毛片 特级做人爱c级 国内偷拍在线精品 国产精品香蕉视频在线 国产精品高清视频免费 朋友的姐姐线观高清2 欧美高清videosedexohd 迷人的保姆5线观高清 天天看高清影视在线观看 一本道理高清在线播放 日本一道本高清二区 天天看免费高清影视 一区二区三区高清视频 日本一大免费高清 欧美高清vitios 高清一区高清二区 天天看高清影视在线WWW 特级aav毛片欧美免费观看 午夜国产免费视频亚洲-在线欧美 精品 第1页 天天看大片特色视频 免费A级毛片 特级做人爱c级 午夜国产免费视频亚洲-在线欧美 精品 第1页 中国A级毛片 A级人体片 香港三级 公憩关系小说 欧美三级片 秋霞理论在一l级 超级乱婬长篇小说 天堂v无码亚洲一本道 中文字幕乱码 电影在线观看 中文字幕乱码免费 中文亚洲无线码 日本无码不卡中文免费 日本一本道免费天码av 中文欧美无线码 国产av在在免费线观看 精品国产自在现线拍 亚洲AV国产AV手机在线 久久爱www免费人成 女人哪种下面最受欢迎 小妖精一天不做就难受呀 非会员试看一分钟做受小视频 女人的性承受极限 偷窥女教师 妈妈的朋友4线观高清 4攻一受同时做宿舍 我的妻子的姐姐2 电影 家里没人半夜就和姐姐 younggir第一次young 坐车跟姐姐那个 爸不不要了太满了流来了 能看到让你流水的小说 蜜汁在马背上流下来 喷个不停gif出处 喷潮白浆直流视频在线 女人喷潮完整视频 吹潮流的水能喝吗 色综合亚洲色综合吹潮 美国式禁忌 老汉开花苞 免费人做人爱的视频 午夜国产免费视频亚洲-在线欧美 精品 第1页 a级做爰片 午夜国产免费视频亚洲-在线欧美 精品 第1页 做爱网站 白小姐四肖必选一肖 younggir第一次young 宝贝我有点大你忍一下 国语自产一区第二页 不卡无在线一区二区三区观 日本一大免费高清 日本一本免费一二三区 午夜国产免费视频亚洲-在线欧美 精品 第1页 在线不卡日本v二区 w006.top 五个大佬跪在我面前叫妈 gif动态图视频第五十八期 亚洲五月六月丁香缴情 五月爱婷婷六月丁香色 综合欧美五月丁香五月 色婷亚洲五月 五月爱婷婷六月丁香色 十大免费最污的直播 口述在车里下面被添 公车上强行被灌满浓精 坐车跟姐姐那个 呵呵我要别停我要死了 么公的好大好硬好深好爽想要 使劲里面痒想要 一晚上要了小姑娘三次 想要嘛人家想啊你快点嘛 求你们不要了np 老公说想放在里面睡觉 好妈妈快点想死我了 500短篇超污多肉推荐 很肉到处做1v1青梅竹马 可以免费观看的av毛片 午夜国产免费视频亚洲-在线欧美 精品 第1页 日本毛片18禁免费 日本高清免费毛片大全 午夜国产免费视频亚洲-在线欧美 精品 第1页 午夜国产免费视频亚洲-在线欧美 精品 第1页 18岁末年禁止观看试看一分钟 美国式禁忌5一11集 我的绝色总裁未婚妻 绝味儿媳妇txt 顶级少妇 荡公乱妇 玩弄放荡人妇系列 japanesewiif0孕妇 熟妇大尺度人体艺 玩两个少妇女邻居 美妇乱人伦小说 67194成l人在线观看线路 公憩关系小说 私欲小说 杂乱小说1第403部分 老师不行我做不下去了小说 图片区 偷拍区 小说区 销魂美女图库 做爱动态图 131美女做爰图片 gif动态图出处第900期 他抬高她的腰撞到最深处 甜宠肉H双处