北京市生活饮用水阴阳离子和消毒副产物调查

发布时间：2018-06-28 22:38

本文选题：生活饮用水 + 阴离子　；参考：《环境与健康杂志》2015年11期

【摘要】：目的了解北京市城区生活饮用水中阴阳离子和消毒副产物的水平。方法于2015年4月15-20日在北京市城区不同方位选取96户家庭,按照GB/T 5750-2006《生活饮用水标准检验方法》中规定的方法采集生活饮用水样品,并检测其中Li~+、Na~+、K~2+、Ca~(2+)、Mg~(2+)、NH_4~+-N、F~-、Cl~-、SO_4~(2-)、NO_3~--N、ClO_2~-、BrO_3~-、二氯乙酸(DCAA)、ClO_3~-和三氯乙酸(TCAA)的浓度及总硬度。结果除了NO_3-~-N和总硬度有部分家庭超标(超标率分别为43%和1.1%)外,其余指标均合格。一次和二次供水的生活饮用水中所有指标水平差异均无统计学意义(P0.05)。以井水作为供水方式的饮用水中Cl~-、NO_3~--N、SO_4~(2-)、Li~+、Na~+、Mg~(2+)、Ca~(2+)和总硬度明显高于一次供水和二次供水,ClO_3~-浓度明显低于一次供水和二次供水,K~+浓度低于一次供水,差异均有统计学意义(P0.05)。仅西南地区Cl~-、NO_3~--N、SO~(2-)、ClO_3~-和Na~+高于西北、东北、东南地区,F~-低于西北、东北、东南地区;而4个方向的生活饮用水中Li~+、K~+、Mg~(2+)、Ca~(2+)和总硬度均无明显差异。结论北京市城区以一次和二次供水的生活饮用水水质较好,以井水为水源的地区应加强生活饮用水水质监测。
[Abstract]:Objective to investigate the levels of anion and disinfection byproducts in drinking water in urban area of Beijing. Methods from April 15 to 20, 2015, 96 families were selected from different directions in Beijing, and the drinking water samples were collected according to the method stipulated in GB / T 5750-2006 Standard Test method for drinking Water. The concentration and total hardness of NH4 ~ -NK ~ (2) K ~ (2) C ~ (2) C ~ (2) C ~ (2) C ~ (2) C ~ (2) -C _ (4) C _ (2) C ~ (2 -) C _ (4) C _ (2) C _ (2) C ~ (2 -) C _ (2) C _ (2) C ~ (2) C ~ (2) C ~ (2) C ~ (2 +) -C ~ (2 +) C ~ (2) C ~ (2) C ~ (2) C ~ (2) ~ (2) C ~ (2) ~ (2) ~ (2) -@@ Results with the exception of no _ 3-P _ N and total hardness of some families (the rates of exceeding the standard were 43% and 1.1% respectively), the other indexes were up to standard. There was no significant difference in all indexes between primary and secondary water supply (P0.05). In drinking water with well water as the water supply, the concentration of Cl-NSO _ 3- ~ (2-) Li ~ (2-) Li ~ (2-) Na ~ (2) mg ~ (2) Ca ~ (2) and total hardness is obviously higher than that of the primary water supply and the secondary water supply, the concentration of Cl-O _ (3N) ~-is significantly lower than that of the primary water supply and the second water supply, and the K~ concentration of the second water supply is lower than that of the primary water supply (P0.05), and the total hardness is significantly higher than that of the primary water supply and the secondary water supply (P < 0.05). Only in southwestern China, Cl-No3-, NCSO2- and Na- are higher than those in Northwest China, and in Southeast China, they are lower than those in Northwest and Southeastern China, but there is no significant difference in Li-K ~ (2) mg ~ (2) Ca ~ (2) and total hardness in drinking water in the four directions. Conclusion the drinking water quality of primary and secondary water supply is better in Beijing urban area, and the monitoring of drinking water quality should be strengthened in the area with well water as the source of water.
【作者单位】：中国疾病预防控制中心环境与健康相关产品安全所;
【基金】：国家卫计委卫生行业科研专项(201302004)
【分类号】：R123.1

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