2015年—2022年北京市怀柔区生活饮用水中总硬度监测分析  

Monitoring and analysis of total hardness of drinking water in Huairou District of Beijing from 2015 to 2022

作　　者：坑斌[1] 孙利文[1] 李宏刚[1] 李福军[1] KENG Bin;SUN Li-wen;LI Hong-gang;LI Fu-jun(Huairou District Center for Disease Control and Prevention,Beijing 101400,China)

机构地区：[1]北京市怀柔区疾病预防控制中心,北京101400

出　　处：《中国卫生检验杂志》2023年第14期1771-1773,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的了解怀柔区生活饮用水中总硬度变化趋势,为改善怀柔区水中总硬度提供数据支撑。方法对2015年—2022年农村地区和城市地区饮用水监测点进行抽检,在每年枯水期(3月—5月)和丰水期(7月—9月)各抽检1次,检测项目为总硬度,根据《地下水质量标准》(GB/T 14848—2017)中给出的水质软硬度划分建议值进行等级划分。结果2015年—2022年共采集水样1207件,合格率为100.00%,中位数和四分位距为270.00(95.10)mg/L;不同年度间饮用水中总硬度差异有统计学意义(P<0.05),总硬度有逐年上升趋势;不同水期间饮用水中总硬度统计量Z值为-4.565,差异有统计学意义(P<0.05),丰水期总硬度中位数高于枯水期总硬度中位数;城市和农村地区饮用水中总硬度统计量Z值为-5.616,差异有统计学意义(P<0.05)。结论怀柔区饮用水中总硬度存在年度、水期、地区的差异,建议今后根据研究结果着重加强不同地区、水期总硬度的监测频率,针对检测结果适时采取适当的干预措施,保障百姓饮水健康。Objective This paper aims to understand the variation trend of total hardness in drinking water in Huairou District,so as to provide data support for improving the total hardness in water in Huairou District.Methods Sampling was performed on the drinking water monitoring sites in rural and urban areas from 2015 to 2022,with spot check once in dry season(March-May)and wet season(July-September)respectively.The test item is total hardness.According to the Groundwater Quality Standard(GB/T 14848—2017),the recommended value of soft and hard water quality division is divided into grades.Results A total of 1207 water samples were collected from 2015 to 2022.The qualified rate was 100.00%,and the median and interquartile distance was 270.00(95.10)mg/L.The difference in total hardness of drinking water in different years had statistical significance(P<0.05),and the total hardness increased year by year.The Z value of total hardness in drinking water during different water periods was-4.565,and there was statistical significance on the difference(P<0.05);the median of total hardness in wet period was higher than that in dry period.The Z value of total hardness in drinking water in urban and rural areas was-5.616,with the difference statistically significant(P<0.05).Conclusion The total hardness of drinking water in Huairou District varies in the perspectives of year,water period,and region.It is suggested to strengthen the monitoring frequency of total hardness in different regions and water period according to the research results in the future,and take appropriate intervention measures according to the test results to ensure people's drinking water safety.

关 键 词：饮用水 总硬度 农村 

分 类 号：R123[医药卫生—环境卫生学]