佛山市禅城区生活饮用水总硬度分析  

Analysis of Total Hardness of Domestic Drinking Water in Chancheng District,Foshan City

作　　者：陈玉娟 欧阳静茹[1] 汪凯 CHEN Yujuan;OUYANG Jingru;WANG Kai(Chancheng District Center for Disease Control and Prevention,Foshan 528000,China)

机构地区：[1]佛山市禅城区疾病预防控制中心,广东佛山528000

出　　处：《食品安全导刊》2024年第34期58-61,共4页China Food Safety Magazine

摘　　要：目的:了解广东省佛山市禅城区生活饮用水中总硬度的情况和变化规律,为改善佛山市禅城区居民生活饮用水水质提供科学依据。方法:参考国家标准对2021—2024年佛山市禅城区的生活饮用水末梢水进行采样检测和分析。结果:2021—2024年共检测204份水样,合格率为100%。总硬度平均值为96.5 mg·L^(-1)(67.1~142.7 mg·L^(-1))。按照我国总硬度等级划分,其中极软水8份(占比3.9%),软水196份(占比96.1%),其他等级未检测到。2024年水样的总硬度均值最低(87.6 mg·L^(-1)),不同年份的水样总硬度差异有统计学意义(渐进F=13.2,P<0.01)。丰水期的总硬度较低,枯水期的总硬度较高,不同水期的总硬度结果差异有统计学意义(t=-4.09,P<0.01)。结论:佛山市禅城区近年来生活饮用水以软水为主,相对良好,但总体硬度值偏低,提示居民在日常饮食中可适量增加钙、镁元素的摄入。Objective:To investigate the total hardness of drinking water in Chancheng district,Foshan city,Guangdong province,and to provide scientific basis for improving the quality of drinking water.Method:The end water of drinking water in Chancheng district of Foshan city from 2021 to 2024 was sampled and analyzed according to the national standard.Result:A total of 204 water samples were tested from 2021 to 2024,and the qualified rate was 100%.The average total hardness was 96.5 mg·L^(-1)(from 67.1 mg·L^(-1) to 142.7 mg·L^(-1)).According to the total hardness grade of China,8 parts of extremely soft water(3.9%),196 parts of soft water(96.1%),and other grades were not detected.The mean value of total hardness of water samples in 2024 was the lowest(87.6 mg·L^(-1)),and the difference of total hardness of water samples in different years was statistically significant(progressive F=13.2,P<0.01).The total hardness was lower in wet period and higher in dry period.The difference of total hardness was statistically significant in different water periods(t=-4.09,P<0.01).Conclusion:The drinking water in Chancheng district of Foshan city in recent years is mainly soft water,which is relatively good,but the overall hardness value is low,suggesting that residents can increase the intake and supplement of calcium and magnesium elements in their daily diet.

关 键 词：生活饮用水 总硬度 水质 

分 类 号：R123.1[医药卫生—环境卫生学]