Survey of Microbial Contamination Status in Terminal Equipment Direct Drinking Water Sampled Yantai City
Vol 3, Issue 2, 2022
VIEWS - 27 (Abstract)
Abstract
To investigate terminal equipment direct drinking water quality and sanitation status that sampled from community, school and home, and to provide evidence for the setting of standard, department supervision and consumer consumption. 232 samples were randomly sampled from community, school and home during June to November of 2019. The aerobic plate count, coliforms and Pseudomonas aeruginosa were detected in accordance with standard operating procedure provided by manual of China national food contamination and harmful factors risk monitoring 2019. The positive detection rates of aerobic plate count. Coliforms and Pseudomonas aeruginosa in 232 samples were 84.05%, 3.02% and 7.33%, respectively, the aerobic plate count was main contamination factor of fine drinking water, while Pseudomonas aeruginosa was the main pathogenic bacteria. The overall exceeded the standard rate of terminal equipment fine drinking water was 9.48%. The exceeded the standard rate ranked in order of high was the family, schools and community, compared the sampling link, which was 12.68%､8.97% and 7.23%, respectively, and was not statistically significant between the groups ( χ2=1.36 , P>0.05). There was not seasonal variation regularity of the detection rate to the aerobic plate count, coliforms and Pseudomonas aeruginosa. The was different of exceeded the standard rate for every months, which was November > June > September > October > August > July, in order from higher to low, the exceeded the standard rate was 15.00%, 13.89%, 11.76%, 6.25%, 5.88% and 5.00%, respectively. There was not statistically significant between the groups( χ2=4.47, P>0.05). There were multiple contaminations of the aerobic plate count, coliforms and Pseudomonas aeruginosa in a single sample. The terminalequipment fine drinking water was commonly contaminated by aerobic plate count, coliforms and Pseudomonas aeruginosa, the aerobic plate count was the main pollution factor.
Keywords
Full Text:
PDFReferences
1. GRANDJEAN A C, BARTRAM J K. Essential nature of water for health: Water as part of the dietary intake for nutrients and the role of water in hygiene[G]. Encyclopedia of Environmental Health. Amsterdam:Elsevier B.V, 2011.594-604.
2. Ingrid Ingegerd Rosborg Mineral substances in drinking water and their balance - importance, health significance, safety measures [m]. Translated by duanliping, yanghaibo, he Tian, lipei Beijing: Science and Technology Literature Press, 2017:2
3. Nutrition in World Health Organization drinking water [m]. Maguansheng, zhang Na, translator Beijing: People's Health Publishing House, 2017:22
4. Liuzongyue, zhou Quan, lizongxin Thoughts and suggestions on the development of pipeline direct drinking water projects in China [J]. China water resources, 2019, 50 (15): 50-51
5. Pangxiaoyan, su Chengyuan, huangxiaoling, et al Investigation on health and safety of terminal direct drinking water produced by reverse osmosis membrane [J]. Environmental Science and management, 2011, 36 (9): 79-82
6. Jin Yinlong, e Xueli, chenyayan, et al Gb/t 5750.2-2006 Standard Test methods for drinking water collection and preservation of water samples [s]. Beijing: China Standards Press, 2006
7. National food safety risk assessment center 2019 national work manual on risk monitoring of food pollutants and harmful factors [m]. Beijing: national food safety risk assessment center, 2019: 24-27, 31-34, 230-236.
8. State health and Family Planning Commission of the people's Republic of China, state Food and drug administration GB 4789.2-2016 national food safety standard microbiological examination of food - Determination of total bacterial count [s]. Beijing: China Standards Press, 2016
9. State health and Family Planning Commission of the people's Republic of China, state Food and drug administration GB 4789.3-2016 national food safety standard microbiological examination of food coliform count [s]. Beijing: China Standards Press, 2016
10. State health and Family Planning Commission of the people's Republic of China, state Food and drug administration GB 8538-2016. National food safety standard test method for drinking natural mineral water [s]. Beijing: China Standards Press, 2016
11. Wangzhansheng, fu Wenhua, lihaibo, et al CJ 94-2005. Drinking water quality standard [s]. Beijing: China Standards Press, 2005
12. The state health and Family Planning Commission of the people's Republic of China GB 19298-2014. National food safety standard packaged drinking water [s]. Beijing: China Standards Press, 2014
13. Duanxiangyang, gao Wei, liu Jun Analysis of microbial detection results of direct drinking water in Baotou City from 2009 to 2014 [J]. Disease monitoring and control, 2016, 10 (3): 218-218
14. Chen Lei, ren Lijun, liu Jie, et al Analysis of microbial detection results of direct drinking water in Kaifeng, henan [J]. Public health and preventive medicine, 2017, 28 (5): 105-106
15. Liuxueying, chenhaiping, hu Ying Analysis of water quality test results of piped direct drinking water in Haidian District, beijing from 2014 to 2017 [J]. Applied preventive medicine, 2018, 24 (6): 69-70, 74
16. Wuqingping Application of food microbial safety risk database in packaged drinking water industry [J]. Beverage industry, 2015, 18 (2): 78-81
17. Zhangchunpeng, wang Bo Investigation on Pseudomonas aeruginosa contamination in packaging drinking water in Xuzhou [J]. Journal of food safety and quality inspection, 2019, 10 (8): 353-356
Refbacks
- There are currently no refbacks.
