Drinking water quality assessment for manganese in rural areas of Guangxi Province during 2014-2019
10.19428/j.cnki.sjpm.2020.20075
- VernacularTitle:广西农村2014—2019年饮用水水质锰监测结果分析
- Author:
Jiang-ping HUANG
1
;
Ge-mei ZHONG
;
Yong LI
;
Ri-rong WEI
Author Information
1. Guangxi Center for Disease Control and Prevention, Nanning, Guangxi 530028, China
- Publication Type:Research Article
- Keywords:
water;
rural area;
manganese;
sanitation survey
- From:
Shanghai Journal of Preventive Medicine
2020;32(10):857-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the content and distribution of manganese in rural drinking water in Guangxi province, and to provide scientific evidence for improving drinking water quality and safety. Methods The monitoring results of manganese in rural drinking water in Guangxi from 2014 to 2019 were evaluated according to GB 5749-2006 Sanitary Standards for Drinking Water. Results 47 637 samples were analyzed during 2014-2019.Manganese detection rate was 28.46 %, with the range from 0.05 to 2.71 mg/L, and the qualified rate was 99.46%.The difference of manganese compliance rate in different years was statistically significant (χ2=25.049, P < 0.01), and the rate increased with the increase of year (χ2 =17.498, P < 0.01).The compliance rate in dry seasons was higher than that in wet seasons(χ2=5.871, P < 0.05).The qualified rate of manganese was statistically different between the water samples collected from centralized and scattered supply sources (χ2=90.983, P < 0.01).The qualified rate of manganese in large centralized water supply was higher than that in small centralized water supply (χ2=10.294, P < 0.01).The geographic distribution of the qualified manganese rate was in the following order:center>west>north>south>east.(χ2=103.908, P < 0.01). Conclusion There are high and low concentrations of water manganese in rural areas of Guangxi.While most areas showed low manganese in drinking water, some areas dispayed a local point distribution of high water manganese.
