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Optimization of sampling frequency for routine river water quality monitoring

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Science China Chemistry 2014年第5期57卷 772-778页

作者： LIU Yan ZHENG BingHui WANG Mei XU YanXue qin yanwen State Key Laboratory of Environmental Criteria and Risk Assessment & State Environmental Protection Key Laboratory of Drinking Water Source Protection Chinese Research Academy of Environmental Sciences

Sampling frequency is an important factor to be considered during the design of a water monitoring network,and the cost-effective selection of possible ways and means for the optimization of sampling frequency is still *** paper introduces water pollution index deviation ratio comparison(WPI DRC),a procedure for the optimization of sampling frequency for a routine river water quality monitoring *** frequency optimized using WPI DRC at monitoring station X5 in the mainstream of Xiangjiang River is compared with that established using the traditional Statistical Algorithm *** result of comparison indicates that WPI DRC is more feasible than the traditional *** then,the sampling frequencies for other 16 monitoring stations also have been optimized,and the results show the sampling frequencies of all the stations except that X4 are reduced,and there is no unacceptable difference between water quality evaluation results at 17 stations before and after the ***,it is concluded that WPI DRC is an effective optimization process with operable results,which can be used to fulfill the requirement of practical monitoring work.

关键词： optimization of sampling frequency routine river water quality monitoring water pollution index deviation ratiocomparison

Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China

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Journal of Environmental Sciences 2015年第5期27卷 1-11页

作者： Shouliang Huo Jingtian Zhang Kevin M.Yeager Beidou Xi yanwen qin Zhuoshi He Fengchang Wu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Science Department Earth and Environmental Sciences University of Kentucky

The technique of DGT（diffusive gradients in thin films） using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT1.92〉DGT0.78〉 DGT0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments.

关键词： Sulfidization process Heavy metals DGT(diffusive gradients in thin films)

Migration characteristic of heavy metals in soil around Hongtonshan copper mining area in Liaoning Province

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环境污染与防治 2013年第9期35卷 I0001-I0006页

作者： MA Yingqun WEN Quan qin yanwen ZHENG Binghui ZHANG Lei ZHAO Yanmin (National Key Laboratory of Environmental Criteriaand Risk Assessment State Environmental Protection KeyLaboratory of Estuarine and Coastal Environment WaterResearch Institute Chinese Research Academy of Environ-mental Sciences Beijing 100012)

ANGPTL3 association with lipid levels in obstructive sleep apnea patients

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ANGPTL3 association with lipid levels in obstructive sleep a...

MicroRNA Expression in Patients with Obstructive Sleep Apnea: Potential Marker of Atherosclerosis

中国生物化学与分子生物学会2019年全国学术会议暨学会成立四十周年

作者： Juan Li yanwen qin Yongxiang Wei Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases Beijing An Zhen Hospital Capital Medical University Beijing Institute of HeartLung and Blood Vessel Diseases Key Laboratory of Remodeling-related Cardiovascular Diseases Beijing An Zhen Hospital Capital Medical University Beijing Institute of HeartLung and Blood Vessel Diseases

Background: Obstructive sleep apnea(OSA) is a common sleep problem. It has been observed that many lipid/lipoprotein abnormalities are prevalent in OSA. Angiopoietin-like protein 3(ANGPTL3) is well acknowledged as a key regulator of lipid metabolism. However, no studies have investigated the involvement of ANGPTL3 in OSA. The purpose of this study was to evaluate whether high levels of ANGPTL3 are markers of risk of ***: A total of 327 samples were used, including 271 OSA subjects and 56 controls. The concentration of serum ANGPTL3 was measured by enzyme-linked immunosorbent assay. Polysomnography was used to diagnose obstructive sleep apnea. The associations between ANGPTL3 and OSA were determined by multivariate regression ***: Serum ANGPTL3 in patients with OSA was higher than that in the control group, and the difference was statistically significant(median: 40.25 ng/ml vs 29.48 ng/ml, respectively;P=0.001). After adjusting for confounding factors, circulating ANGPTL3 levels were an independent risk factor for OSA(odds ratio=1.022/ng ANGPTL3, 95% CI 1.001-1.044, P=0.04) and positively correlated with TC(r = 0.2111, P<0.001), TG(r = 0.2118, P<0.001) and LDL-C(r = 0.1576, P<0.001).Conclusions: ANGPTL3 was significantly elevated in OSA and increased the risk of OSA.

关键词： Obstructive sleep apnea Angiopoietin-like protein 3 lipid metabolism

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MicroRNA Expression in Patients with Obstructive Sleep Apnea...

中国睡眠研究会第十届全国学术年会

作者： Kun Li Zhiting Chen yanwen qin Yongxiang Wei Department of Otolaryngology Beijing An Zhen HospitalCapital Medical University

Background: The early prediction of atherosclerosis is important in the management of obstructive sleep apnea patients（OSA）.MicroRNA plays a vital role in the evolution of OSA and *** differential expression may therefore serve as a diagnostic and prognostic biomarker of atherosclerosis in OSA *** aim of this study was to identify specific serum microRNAs that could serve as a novel screening signature of atherosclerosis in OSA *** specificity and sensitivity of these miRNAs in the early diagnosis of atherosclerosis in OSA patients were then ***: The 128 participants in this study underwent maximum carotid intima-media thickness（CIMT） measurements and polysomnography and were divided into four groups: 27 healthy volunteers with normal max-CIMT,31 healthy volunteers with increased max-CIMT,35 OSA patients with normal max-CIMT,and 35 OSA patients with i *** was extracted from the 12 participants（ 3 participants each groups）’serum and used to establish miRNA libraries for deep *** trend analysis and bioinformatics analysis were carried out according to the sequencing results.116 participants were quantified by *** betweendifferential expression of miRNAs and CIMT were assessed using the Spearman correlation ***: Many miRNAs were dysregulated in the OSA,OSA with i CMIT,and nCIMT groups compared with the control group according of the *** worked out 50 differential miRNA expression trends by using the significant expressions of miRNAarrays,including 4 significant *** result of bioinformatics analysis reveal that miR-485-5 p and miR-369-3 p participated in the cellular response to hypoxia and hypoxia-inducible factor-1 alpha（HIF-1α）signaling *** candidated mi RNAs were further examined by *** R-485-5 p and miR-369-3 p is down-regulated in the serum samples of OSA,OSA with i CMIT,and n CIMT groups compared with the control group were identifie

关键词： atherosclerosis obstructive sleep apnea microRNA bioinformatics analysis

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松花江沉积物中硝基苯的分布特征

环境科学学报 2008年第6期28卷 1227-1232页

作者：张雷秦延文郑丙辉路瑞中国环境科学研究院河流与海岸带环境创新基地北京100012

2006年1月通过对松花江全境沉积物的现场调查，研究了2005年11月13日松花江污染事故后硝基苯的沿程分布规律以及沉积物的粒度分布、有机质、铁／锰氧化物含量等地化性质．结果表明，松花江污染事故对松花江沉积物的影响有限，特征污染... 详细信息

2006年1月通过对松花江全境沉积物的现场调查，研究了2005年11月13日松花江污染事故后硝基苯的沿程分布规律以及沉积物的粒度分布、有机质、铁／锰氧化物含量等地化性质．结果表明，松花江污染事故对松花江沉积物的影响有限，特征污染物硝基苯在松花江沉积物中的累积量不大，含量水平在几十个μg·kg^-1之内．硝基苯主要累积在松花江上游吉林段，如吉化双苯厂东10号线以及东10号线入江口处的沉积物．东10号线与东10号线入江口沉积物中硝基苯含量分别达到932．9μg·kg^-1、145．6μg·kg^-1．此外，松花江沿程高有机质含量的泥质沉积物中硝基苯累积量较大，泥质沉积物多分布于松花江上游江段，硝基苯含量为20～50μg·kg^-1，沙质沉积物硝基苯含量大多低于沉积物硝基苯分析方法检出限（10μg·kg^-1）．

关键词：松花江沉积物硝基苯分布特征

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大伙房水库表层沉积物重金属污染分析与评价

环境科学学报 2011年第5期31卷 987-995页

作者：罗燕秦延文张雷郑丙辉贾静中国环境科学研究院国家环境保护河口海岸带环境重点实验室北京100012

辽河流域大伙房水库是抚顺、沈阳两市重要的生活饮用水水源地,因其汇水区内的矿山开采活动而面临严重的重金属污染问题.为了解该区域的重金属污染状况,对大伙房水库表层沉积物中重金属Cr、Cu、Pb、Zn、Cd的含量及空间分布进行了研究,并... 详细信息

辽河流域大伙房水库是抚顺、沈阳两市重要的生活饮用水水源地,因其汇水区内的矿山开采活动而面临严重的重金属污染问题.为了解该区域的重金属污染状况,对大伙房水库表层沉积物中重金属Cr、Cu、Pb、Zn、Cd的含量及空间分布进行了研究,并采用地累积指数法、潜在生态危害指数法及基于多方的沉积物质量基准法对水库重金属污染程度及潜在生态危害进行了评价.结果表明,大伙房水库表层沉积物中Cr、Cu、Pb、Zn、Cd的平均含量分别为81.87、65.20、36.69、137.49、2.38mg·kg-1;与辽宁省土壤元素背景值、辽河水系沉积物平均值及全国水系沉积物平均值相比,5种重金属元素均有一定程度的富集,其中,Cd富集最为严重;元素Cu、Pb、Zn、Cd具有相似的空间变化特征,从浑河入库口到抚顺取水口呈逐步下降的趋势,相关性分析的结果也显示这4种重金属元素两两之间呈显著的正相关关系(p<0.01),推断浑河上游工矿废水的排放是这4种重金属共同的污染源;综合3种评价方法的结果,大伙房水库表层沉积物中Cd为最主要的污染元素,且具有较强的生态危害,Cu为偏中度-中度污染,具有一定的生态危害,Zn、Pb、Cr污染程度较低,生态危害较轻.

关键词：辽河流域大伙房水库表层沉积物重金属空间分布污染评价生态危害

丹江口水库迁建区土壤PAHs的分布特征与来源及其生态风险评价

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环境科学研究 2015年第5期28卷 767-774页

作者：张雷温泉秦延文刘志超常旭曹伟中国环境科学研究院环境保护河口与海岸带环境重点实验室北京100012 中国环境科学研究院环境基准与风险评估国家重点实验室北京100012

为评价丹江口水库迁建区土壤中PAHs的污染水平及该区域被淹没后的生态风险,采用GCMS（气相色谱-质谱联用仪）分析技术,检测了该区域表层（0~20 cm）土壤中的w（PAHs）,并探讨不同土地利用方式下PAHs的分布特征及来源.结果表明：1研究... 详细信息

为评价丹江口水库迁建区土壤中PAHs的污染水平及该区域被淹没后的生态风险,采用GCMS（气相色谱-质谱联用仪）分析技术,检测了该区域表层（0~20 cm）土壤中的w（PAHs）,并探讨不同土地利用方式下PAHs的分布特征及来源.结果表明：1研究区域表层土壤中w（PAHs）为4.04~181 ngg,平均值为41.3 ngg,在不同土地利用方式下表现为居住地〉玉米地〉菜地〉其他耕地〉养殖地〉林地〉果园.2特征化合物指数法分析结果显示,菜地、居住地和其他耕地表层土壤中PAHs主要来自柴油燃烧,少部分属既有燃料燃烧又有石油污染的混合源,养殖地和玉米地表层土壤中PAHs主要来自燃料燃烧,说明土地利用方式对表层土壤中PAHs的质量分数、组成及其来源等均产生一定影响.3与国内其他地区湖泊和水库沉积物相比,研究区域表层土壤中w（PAHs）较低,属于清洁无污染等级.迁建区表层土壤被淹没成为沉积物后,由于PAHs污染程度较小,因此潜在生态风险较低.

关键词： PAHs 含量组成分布来源生态风险丹江口水库

面向水质安全预警的流域产业化和城镇化压力源评估方法

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环境科学研究 2016年第12期29卷 1840-1846页

作者：李虹王丽婧秦延文方喻弘中国环境科学研究院国家环境保护饮用水水源地保护重点实验室湖北工业大学资源与环境工程学院

为适应水环境风险管理中对压力源的快速评判需求,构建了流域产业化、城镇化压力源评估方法,并开展其应用研究.从压力源危险性及受体易损性着眼,提出了压力源结构风险和布局风险双重控制思路;围绕警示性评估的定位,针对单项及综合风险分... 详细信息

为适应水环境风险管理中对压力源的快速评判需求,构建了流域产业化、城镇化压力源评估方法,并开展其应用研究.从压力源危险性及受体易损性着眼,提出了压力源结构风险和布局风险双重控制思路;围绕警示性评估的定位,针对单项及综合风险分析,阐明了评估指标选取、风险指数计算和预警级别划分等步骤,并以三峡库区为案例进行了评估.结果显示,三峡库区产业化、城镇化压力源综合评估Ⅰ级（重警）区主要集中在重庆市主城区附近的8个区县,其结构风险指数值（0.375 6;.624 6）和布局风险指数值（0.598 7;.967 8）均较高;Ⅱ级（中警）区域包括江北区、北碚区、巴南区、大渡口区和巫山县,呈现布局风险指数值（0.820 7;.000 0）较高、结构风险指数值（0.258 4;.355 5）相对低的特征;Ⅲ级（轻警）区域包括渝东南和渝东北的5个区县和渝中区.其中,渝中区结构风险指数值（0.135 6）小,但因其布局风险指数值（0.960 7）较大而使得综合评估结果为轻警状态.

关键词：水质安全产业化城镇化压力源评估三峡库区