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Simultaneous analysis of five taste and odor compounds in surface water using solid-phase extraction and gas chromatography-mass spectrometry

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Frontiers of Environmental Science & Engineering 2012年第1期6卷 66-74页

作者： Wenfeng SUN ruibao jia Baoyu GAO Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityJinan 250100China Jinan Water and Wastewater Monitoring Center Jinan 250033China

In this paper, a method using solid-phase extraction （SPE） and gas chromatography-mass spectro- metry （GC-MS） was developed to simultaneously analyze five taste and odor compounds in surface water, i.e., 2- methylisoborneol （2-MIB）, 2,4,6-trichloroanisole （TCA）, 2-isopropyl-3-methoxy pyrazine （IPMP）, 2-isobutyl-3- methoxy pyrazine （IBMP）, and trans-l,lO-dimethyl- trans-9-decalol （geosmin, GSM）. The mass spectrometry was operated in selective ion monitoring （SIM） mode. Three kinds of SPE columns and three eluting solvents were compared, the C 18 column was chosen as optimum SPE column, and methanol was chosen as the optimum eluting solvent. It was found that the method showed good linearity in the range of 1-200 ng.L^-1 and gave detection limits of 0.5 1.5 ng.L^-1 for individual compounds. Good recoveries （93.5%-108%） and relative standard deviations （1.58%-7.31%） were also obtained. Additionally, concentrations of these taste and odor compounds in Jinan＇s surface and drinking water were analyzed by applying this method, and the results showed that GSM and 2-MIB were the dominant taste and odor compounds in Jinan＇s raw water.

关键词： solid-phase extraction (SPE) gas chromato- graphy-mass spectrometry (GC-MS) taste and odor compounds surface water micropollutant

全氟和多氟化合物在水中赋存特征与去除技术研究进展

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济南大学学报（自然科学版） 2024年第3期38卷 312-319页

作者：高珂辛晓东许伟颖刘红逯南南贾瑞宝济南大学水利与环境学院山东济南250022 山东省城市供排水水质监测中心山东济南250101

针对水环境中全氟和多氟化合物污染日益严峻且难以去除的现状,对水环境中全氟和多氟化合物的赋存特征与去除技术进行综述,包括全氟和多氟化合物在水环境中的污染现状、环境行为、生态风险及污染物去除技术等,总结吸附法、超声降解法、... 详细信息

针对水环境中全氟和多氟化合物污染日益严峻且难以去除的现状,对水环境中全氟和多氟化合物的赋存特征与去除技术进行综述,包括全氟和多氟化合物在水环境中的污染现状、环境行为、生态风险及污染物去除技术等,总结吸附法、超声降解法、光化学法、电化学氧化法、微生物降解法等去除水环境中全氟和多氟化合物的优缺点,指出未来研究重点是结合全氟和多氟化合物的环境行为特点将去除技术进行联合应用。

关键词：全氟和多氟化合物赋存特征去除技术水环境污染特性

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Comparison of UV-based advanced oxidation processes for the removal of different fractions of NOM from drinking water

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Journal of Environmental Sciences 2023年第4期126卷 387-395页

作者： Zhenxing Yao Mingquan Wang ruibao jia Qinghua Zhao Li Liu Shaohua Sun Shandong Province City Water Supply and Drainage Water Quality Monitoring Center Jinan 250101China

This study examined the effectiveness for degradation of hydrophobic (HPO),transphilic(TPI) and hydrophilic (HPI) fractions of natural organic matter (NOM) during UV/H_(2)O_(2),UV/TiO_(2)and UV/K2S2O8(UV/PS) advanced oxidation processes (AOPs).The changing characteristics of NOM were evaluated by dissolved organic carbon (DOC),the specific UV absorbance (SUVA),trihalomethanes formation potential (THMFP),organic halogen adsorbable on activated carbon formation potential (AOXFP) and parallel factor analysis of excitation–emission matrices (PARAFAC-EEMs).In the three UV-based AOPs,HPI fraction with low molecular weight and aromaticity was more likely to degradate than HPO and TPI,and the removal efficiency of SUVA for HPO was much higher than TPI and HPI *** terms of the specific THMFP of HPO,TPI and HPI,a reduction was achieved in the UV/H_(2)O_(2)process,and the higest removal rate even reached to 83%.UV/TiO_(2)and UV/PS processes can only decrease the specific THMFP of *** specific AOXFP of HPO,TPI and HPI fractions were all able to be degraded by the three UV-based AOPs,and HPO content is more susceptible to decompose than TPI and HPI ***/H_(2)O_(2)was found to be the most effective treatment for the removal of THMFP and AOXFP under given conditions.C1 (microbial or marine derived humic-like substances),C_(2) (terrestrially derived humic-like substances)and C_(3) (tryptophan-like proteins) fluorescent components of HPO fraction were fairly labile across the UV-based AOPs treatment.C_(3) of each fraction of NOM was the most resistant to degrade upon the UV-based *** from this study may provide the prediction about the consequence of UV-based AOPs for the degradation of different fractions of NOM with varied characteristics.

关键词： Advanced oxidation processes Natural organic matter Trihalomethanes Organic halogen adsorbable on activated carbon Parallel factor analysis

典型水处理氧化过程中微塑料老化及有机物释放特征研究

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环境科学研究 2024年第2期37卷 308-315页

作者：李桂芳王晓虹张孟雨王永磊宋武昌杜振齐贾瑞宝山东省城市供排水水质监测中心山东济南250014 山东建筑大学市政与环境工程学院山东济南250100 同济大学环境科学与工程学院上海200082

地表水所含微塑料(MPs)的老化破碎过程可导致溶解性有机物(DOM)释放,进而对水环境及水处理过程造成潜在风险.为探索MPs在典型水处理氧化过程中的老化和有机物释放特性,本研究选取聚酰胺66(PA66)和聚对苯二甲酸乙二醇酯(PET)为研究对象,... 详细信息

地表水所含微塑料(MPs)的老化破碎过程可导致溶解性有机物(DOM)释放,进而对水环境及水处理过程造成潜在风险.为探索MPs在典型水处理氧化过程中的老化和有机物释放特性,本研究选取聚酰胺66(PA66)和聚对苯二甲酸乙二醇酯(PET)为研究对象,探究了典型工业级MPs在模拟水处理氧化(UV、UV/H_(2)O_(2)、O_(3))过程中的DOM析出规律.结果表明:①3种典型氧化过程均加速了MPs-DOM的溶出,PA66的DOM生成量[以溶解性有机碳(DOC)计]相对于PET更高.②在对照组、UV氧化、O_(3)氧化下,PA66-DOM和PET-DOM的DOC值均随反应时间及氧化剂浓度的增加呈上涨趋势,而在UV/H_(2)O_(2)氧化下呈先增加后减小的规律,且3类氧化中O_(3)技术对2类MPs的氧化效果相对更好.③MPs表层的官能团在氧化处理前后未有较大差异,其羰基指数(CI)均有一定程度的升高.④PA66与PET所产生的DOM在官能团构成及荧光组分上较为相似,主要由类色氨酸、类络氨酸、可溶性微生物代谢产物组成.研究显示,以PA66和PET为代表的工业级MPs在高级氧化水处理过程中会析出DOM,对后端消毒等工艺产生潜在影响.

关键词：微塑料水处理氧化技术溶解性有机物(DOM) 三维荧光

Experimental and theoretical investigation on degradation of dimethyl trisulfide by ultraviolet/peroxymonosulfate: Reaction mechanism and influencing factors

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Journal of Environmental Sciences 2023年第5期127卷 824-832页

作者： jianing Sun Xiaodong Xin Shaohua Sun Zhenqi Du Zhenxing Yao Mingquan Wang ruibao jia Shandong Province Water Supply and Drainage Monitoring Center Jinan 250101China School of Water Conservancy and Environment University of JinanJinan 250022China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

With a large amount of domestic sewage and industrial wastewater discharged into the water bodies,sulfur-containing organicmatter inwastewater produced volatile organic sulfide,such as dimethyl trisulfide(DMTS)throughmicroorganisms,caused the potential danger of drinking water safety and human *** present,there is still a lack of technology on the removal of *** this study,the ultraviolet/peroxymonosulfate(UV/PMS)advanced oxidation processes was used to explore the degradation of *** than 90%of DMTS(30μg/L)was removed under the conditions of the concentration ratio of DMTS to PMS was 3:40,the temperature(T)was 25±2℃,and 10 min of irradiation by a 200 W mercury lamp(365 nm).The kinetics rate constant k of DMTS reacting with hydroxyl radical(HO·)was determined to be 0.2477 min^(−1).Mn^(2+),Cu^(2+)and NO_(3)^(-)promoted the degradation of DMTS,whereas humic acid and Cl-in high concentrations inhibited the degradation *** chromatography-mass spectrometry was used to analyze the degradation products and the degradation intermediates were dimethyl disulfide and *** functional theory was used to predict the possible degradation mechanism according to the frontier orbital theory and the bond breaking mechanism of organic *** results showed that the S–S,C–S and C–H bonds in DMTS molecular structure were prone to fracture in the presence of free radicals,resulting in the formation of alkyl radicals and sulfur-containing radicals,which randomly combined to generate a variety of degradation products.

关键词： Ultraviolet/peroxymonosulfate Dimethyl trisulfide Products Density functional theory Degradation mechanism

超高效液相色谱-三重四极杆质谱联用仪测定环境水相和沉积物中19种全/多氟烷基化合物

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净水技术 2024年第8期43卷 61-69,166页

作者：高珂辛晓东刘红刘莉宋艳贾瑞宝国家城市供水<排水>监测网济南监测站山东济南250101 山东省城市供排水水质监测中心山东济南250101 济南大学水利与环境学院山东济南250022

全/多氟烷基化合物(perfluoro and polyfluoroalkyl substances,PFASs)在水环境中具有生态毒性、长距离迁移性、能随食物链富集等特点。随着水环境中PFASs的暴露风险不断增加,PFASs检测技术逐渐成为研究人员关注的热点。文章改进了固相... 详细信息

全/多氟烷基化合物(perfluoro and polyfluoroalkyl substances,PFASs)在水环境中具有生态毒性、长距离迁移性、能随食物链富集等特点。随着水环境中PFASs的暴露风险不断增加,PFASs检测技术逐渐成为研究人员关注的热点。文章改进了固相萃取法富集水样、超声振荡-提取法提取沉积物样品的前处理条件,优化了液相色谱和三重四极杆质谱分离检定条件,整合建立了适用于测定环境水相与沉积物中19种PFASs的超高效液相色谱-三重四极杆质谱检测方法。试验结果表明,水相中19种PFASs在低、中、高浓度下加标回收率分别为60.2%~120.0%、74.3%~114.2%、65.4%~107.2%,相对标准偏差(RSD)分别为2.1%~12.1%、4.5%~11.7%、4.3%~9.8%。沉积物中19种PFASs低、中、高3个浓度的加标回收率分别为80.3%~124.1%、89.9%~104.3%、95.1%~105.7%,RSD分别为5.0%~14.3%、3.1%~10.9%、2.6%~9.9%。水相和沉积物中PFASs在一定线性范围内具有良好线性,方法检出限为0.2~0.5 ng/L和0.1~0.6 ng/g,方法定量限为0.8~2.0 ng/L和0.4~2.5 ng/g。该方法前处理简单,方法学指标好,适用于各类型水质和沉积物中PFASs的高通量检测。

关键词：全/多氟化合物水沉积物前处理检测方法

视野计数法检测水源水中藻类不确定度系统评定

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净水技术 2024年第8期43卷 54-60页

作者：褚福敏逯南南陈燕宋艳孙韶华贾瑞宝国家城市供水<排水>监测网济南监测站山东济南250101 山东省城市供排水水质监测中心山东济南250101

针对藻类计数实验室质量控制难度大、检测人员专业技术水平要求较高等问题,文章开展该项目检测结果不确定度系统评定方法研究。通过显微镜计数固定浓缩后样品中藻类数量,系统分析视野计数法检测水源水中藻类测定结果不确定度来源,计算6... 详细信息

针对藻类计数实验室质量控制难度大、检测人员专业技术水平要求较高等问题,文章开展该项目检测结果不确定度系统评定方法研究。通过显微镜计数固定浓缩后样品中藻类数量,系统分析视野计数法检测水源水中藻类测定结果不确定度来源,计算6个重点影响因素引入的不确定度分量,综合不确定度传播规律,构建藻类计数测定结果不确定度评定模型,建立水源水中藻类计数结果不确定度的评定方法。藻类计数检测过程中由取样、固定、定容、制片、显微镜、重复性测量引入的不确定度分别为0.00408、0.00245、0.00408、0.0000819、0.007、0.0198,重复性测量是藻类计数检测结果不确定度的主要来源。样品中藻类浓度对计数结果的不确定度影响较大,检测结果<100万个/L时,检测结果的扩展不确定度明显增大。选用准确度、精密度高的仪器设备,规范的操作,以及对仪器设备定期进行检定校准是控制检测结果不确定度、提高试验可信度的有效手段。对藻类计数方法关键环节进行优化,是提高检测结果使用价值的重要途径。

关键词：藻类视野计数法不确定度水源水系统评定

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纳滤膜对不同水源水中有机物处理效果

环境污染与防治 2024年第4期46卷 471-477页

作者：齐浩然糜自栋宋武昌孙韶华陈发明刘建广贾瑞宝山东建筑大学市政与环境工程学院山东济南250101 中建交通建设集团有限公司山东济南250014 山东省城市供排水水质监测中心山东济南250101

为探究纳滤(NF)在实际水体中去除有机物的特性,以水质常规指标、三卤甲烷生成势(THMFP)、亲水性有机碳及三维荧光为主要指标,综合研究了两种NF膜(NF1和NF2)对不同水体中有机污染的处理效果,并探索了膜污染机制。结果表明,NF1、NF2均能... 详细信息

为探究纳滤(NF)在实际水体中去除有机物的特性,以水质常规指标、三卤甲烷生成势(THMFP)、亲水性有机碳及三维荧光为主要指标,综合研究了两种NF膜(NF1和NF2)对不同水体中有机污染的处理效果,并探索了膜污染机制。结果表明,NF1、NF2均能有效改善饮用水水质,对总有机碳的去除率分别可达到94%、72%以上;对高锰酸盐指数的去除率分别可达到80%、66%以上。NF1对进水THMFP的去除率均在90%左右。无机和有机污染的协同作用是造成NF膜污染的主要原因。

关键词：纳滤有机物去除率膜污染

The Impacts of Different Bromide Concentrations and Advanced Oxidation Ways on the Bromate Generation

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Meteorological and Environmental Research 2015年第1期6卷 55-58页

作者： Yang Xiaoliang jia ruibao Sun Shaohua Song Wuchang Jinan Water Supply and Drainage Monitoring Center Shandong Province City Water Supply and Drainage Water Quality Monitoring Center

Taking reservoir water diverting from Yellow River as raw water, and using 5 m^3/h of pilot device, the impacts of different bromide concentrations and advanced oxidation ways on bmmate generation in effluent of ozone -upward flow BAC -sand filtration technology. Results showed that when bromine ion of raw water was about 100 μg/L, and ozone dosage was 2 mg/L, bromate exceeding risk existed in the effluent of ozone - upward flow BAC technology, and bromate content in the effluent reached 10 μg/L. Moreover, generation amount of bromate had certain linear rela- tionship with bromine ion of influent. Both dosing hydrogen peroxide and potassium permanganate could effectively inhibit bromate production, and there was no bromate generation in final effluent of the technology. Moreover, it also could improve the removal of major pollutants in the water by the combined process. Compared with advanced oxidation of hydrogen peroxide, potassium permanganate pre-oxidation could better control production costs.

关键词： Bromate Reservoir water from Yellow River Hydrogen peroxide Potassium permanganate Ozone China