این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Journal of Advances in Environmental Health Research، جلد ۴، شماره ۳، صفحات ۱۳۵-۱۴۱
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی A survey of heterotrophic bacteria and coliforms in the water of old and new distribution networks
چکیده انگلیسی مقاله Controlling the microbiological quality of water is important for its uses. Microbiological requirements of drinking water ensure the absence of coliforms, but may indicate the potential presence of other potentially pathogenic microorganisms and viruses of fecal origin. A total of 36 water samples, representing the drinking water of the whole city of Aradan, Semnan, Iran, were randomly collected from the old and new distribution systems of Aradan from December 2014 to June 2015.The hetroterophic plate count (HPC), coliform, residual chlorine, and pH of the samples were measured. Heterotrophic bacteria were measure using R2A and nutrients agar culture media, and the spread plate count method was used to determine HPC. Average concentration of total coliform in the old distribution network ( 13⁄84 100 ml ) was more than the new distribution network ( 9⁄42 100 ml ). The results of studying microbial load in the old and new distribution network showed that there is a significant difference between total coliforms in the two networks (P = 0.002). Moreover, the average concentration of heterotrophic bacteria in the old distribution network (1917.33 number/100 ml) was more than that in the new distribution network (14.57 number/100 ml). There was a significant difference between the average concentration of heterotrophic bacteria in the old and new distribution networks (P = 0.003). The effects of seasons and the age of the water network on coliform bacteria and heterotrophic bacteria were also studied. The concentrations of heterotrophic bacteria, total coliform, and fecal coliforms were higher in the old distribution network in comparison to that in the new distribution network.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله عاطفه jaleilzadeh |
student research committee, department of environmental health engineering, school of public health and paramedicine, semnan university of medical sciences, semnan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی سمنان (Semnan university of medical sciences)

مرضیه ghaesari |
student research committee, department of environmental health engineering, school of public health and paramedicine, semnan university of medical sciences, semnan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی سمنان (Semnan university of medical sciences)

مهدی طوسی |
student research committee, department of environmental health engineering, school of public health and paramedicine, semnan university of medical sciences, semnan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی سمنان (Semnan university of medical sciences)

محمد صفری |
student research committee, department of environmental health engineering, school of public health and paramedicine, semnan university of medical sciences, semnan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی سمنان (Semnan university of medical sciences)

زهرا سلیمانی |
department of environmental health engineering, school of public health and paramedicine, semnan university of medical sciences, semnan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی سمنان (Semnan university of medical sciences)

نشانی اینترنتی http://jaehr.muk.ac.ir/article_42941_9c0547e30775aa25cc66355840a2bc97.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/326/article-326-432386.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات