南宁市售瓶装水中微囊藻毒素调查及初步健康风险评价
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摘要
目的:调查南宁市售瓶装水中3种微囊藻毒素(MCs)MC-LR、MC-RR、MC-YR浓度,并进行初步健康风险评估。方法:2017年9月采集南宁市内超市售卖的具有代表性的31种瓶装水,经C18固相萃取柱净化富集后,采用高效液相色谱法对3种典型的MCs进行定性定量分析,并应用水环境健康风险评价模型对监测结果进行初步评价。结果:31种瓶装水中,MCs均有检出,浓度范围为0.05~17.05ng/L,以MC-RR为主;矿泉水与纯净水的MCs浓度、矿泉水中的国产与进口的MCs浓度,差异均无统计学意义(P>0.05);MCs所致个人年健康风险范围为(0.13×10-6~43.72×10-6)/a,均低于国际辐射防护委员会(ICRP)和美国环境保护署(US EPA)推荐的最大可接受值。结论:所检测瓶装水中MCs浓度均未超过国家标准。
Objective:To quantify microcystins(MCs:MC-LR,MC-RR,MC-YR)in bottled water in Nanning and to conduct a preliminary health risk assessment.Methods:31 bottled water sold at major representative supermarkets in Nanning in September 2017 were collected.The water samples were cleaned and enriched by solid phase extraction(SPE)using C18,and the three typical MCs,MC-LR,MC-RR,and MCYR were quantified by high performance liquid chromatography(HPLC).A preliminary health risk assessment was conducted.Results:MCs were detected in 31 kinds of bottled water,and the content ranged from0.05 to 17.05 ng/L.MC-RR was the main component.No significant difference was found in the MCs concentration between mineral water and pure water,domestic and imported mineral water(P>0.05).The level of individual health risk of bottled water ranged from 0.13×10-6 to 43.72×10-6/a,and were lower than the maximum allowance level recommended by ICRP and US EPA.Conclusion:The measured concentrations of MCs in bottled water did not exceed the national standard.
Objective:To quantify microcystins(MCs:MC-LR,MC-RR,MC-YR)in bottled water in Nanning and to conduct a preliminary health risk assessment.Methods:31 bottled water sold at major representative supermarkets in Nanning in September 2017 were collected.The water samples were cleaned and enriched by solid phase extraction(SPE)using C18,and the three typical MCs,MC-LR,MC-RR,and MCYR were quantified by high performance liquid chromatography(HPLC).A preliminary health risk assessment was conducted.Results:MCs were detected in 31 kinds of bottled water,and the content ranged from0.05 to 17.05 ng/L.MC-RR was the main component.No significant difference was found in the MCs concentration between mineral water and pure water,domestic and imported mineral water(P>0.05).The level of individual health risk of bottled water ranged from 0.13×10-6 to 43.72×10-6/a,and were lower than the maximum allowance level recommended by ICRP and US EPA.Conclusion:The measured concentrations of MCs in bottled water did not exceed the national standard.
引文
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[14]王永杰,贾东红.健康风险评价中的不确定性分析[J].环境工程,2003,21(6):66-69.
[2]SAOUDI A,BRIENT L,BOUCETTA S,et al.Management of toxic cyanobacteria for drinking water production of Ain Zada Dam[J].Environ Monit Assess,2017,189(7):361.
[3]BI X,DAI W,ZHANG S,et al.Effects of toxic microcystis genotypes on natural colony formation and mechanism involved[J].Water Sci Technol,2017,6(4):885-894.
[4]丁新良,何恩奇,钮伟民,等.太湖水体中微囊藻毒素-LR污染状况调查[J].现代预防医学2012(17):4375-4377.
[5]WHO.Cyanobacterial toxins:microcystin-LR in drinking water,background document for the development of WHO guidelines for drinking-water quality[S].Geneva:WHO,2003.
[6]WHO.Guidelines for drinking-water quality[M].AddendumtoVol.2.Geneva:World Health Organization,1998.
[7]GB5749-2006,生活饮用水卫生标准[S].北京:中国标准出版社,2006.
[8]万译文,康天放.城市自来水中挥发性有机氯污染物检测及健康风险评价初步研[J].环境.污染与防治,2010,32(4):16-19,24.
[9]WHO.Cyanobacterial toxins:Microcystin-LR in drinking-water.Background document for development of WHO guidelines for drinking-water quality[EB/OL][2013-06-01].
[10]DIETRICH D,HOEGER S.Guidance values for microcystins in water and cyanobacterial supplement products(blue-green algal supplements):a reasonable or misguided approach[J].Toxicol Appl Pharmacol,2005,203(3):273-289.
[11]倪彬,王洪波,李旭东,等.湖泊饮用水源地水环境健康风险评价[J].环境科学研究,2010,23(1):74-79.
[12]金庭旭,汪小斌,张华.贵阳市售瓶装水中微囊藻毒素调查[J].贵州医科大学学报,2016,41(10):1159-1161.
[13]赵起越,赵红帅,刘保献,等.地表水中微囊藻毒素的检测分析方法[J].化学与生物工程,2015,32(7):9-14,40.
[14]王永杰,贾东红.健康风险评价中的不确定性分析[J].环境工程,2003,21(6):66-69.