نتایج جستجو برای: تخریب ترکیبات تری هالومتان ها thms
تعداد نتایج: 360770 فیلتر نتایج به سال:
The high chlorine dosages in wastewater treatment plants during the COVID-19 pandemic may result increased formation of disinfection by-products (DBPs), posing great threat to aquatic ecosystem receiving water body and public health downstream area. However, limited information is available on effect biological processes CX3R-type DBPs. This study investigated oxidation ditch (OD) anaerobic-ano...
BACKGROUND We previously conducted a study to assess whether household exposures to tap water increased an individual's internal dose of trihalomethanes (THMs). Increases in blood THM levels among subjects who showered or bathed were variable, with increased levels tending to cluster in two groups. OBJECTIVES Our goal was to assess the importance of personal characteristics, previous exposure...
BACKGROUND Evidence for an association between exposure during pregnancy to trihalomethanes (THMs) in drinking water and impaired fetal growth is still inconsistent and inconclusive, in particular, for various exposure routes. We examined the relationship of individual exposures to THMs in drinking water on low birth weight (LBW), small for gestational age (SGA), and birth weight (BW) in single...
مقدمه: تری آزن ها ترکیباتی هستند که کاربردهای فراوانی در زمینه های مختلف ازجمله تولید داروهای ضد سرطانی دارند. هدف این پژوهش بررسی اثرات ضدسرطانی ترکیب جدیدی به نام 1-(3و5-دی کلروفنیل)-3-(2-اتوکسی فنیل) تری آزن بر روی تومورهای پستانی القا شده توسط رده سلولی 4t1 در موش بالغ نژاد balb/c بود. روش بررسی: رده سلولی سرطانی 4t1 کشت داده شده و با غلظت های مختلف ترکیب تری آزنی جدید در مدت زمان 24 ساعت ت...
Providing safe tap water while limiting the occurrence of disinfection by-products (DBPs) is probably one most challenging aspects environmental chemical engineering within urban cycle. In present work, an investigation about this challenge for real conditions a full-scale drinking treatment plant has been carried out. Five different and well-known technologies (four aeration procedures, coagul...
BACKGROUND Bladder cancer has been linked with long-term exposure to disinfection by-products (DBPs) in drinking water. OBJECTIVES In this study we investigated the combined influence of DBP exposure and polymorphisms in glutathione S-transferase (GSTT1, GSTZ1) and cytochrome P450 (CYP2E1) genes in the metabolic pathways of selected by-products on bladder cancer in a hospital-based case-contr...
Tsukuba hypertensive mice (THMs) are transgenic mice carrying human renin and angiotensinogen genes. The aim of this study was to evaluate the role of the renin-angiotensin system (RAS) in cardiac hypertrophy and renal disorders in THMs. After a 2-wk control period, 10-wk-old THMs were treated with lisinopril (ACEI group) or hydralazine (hydralazine group) or left untreated (control group) for ...
شواهدی وجود دارد که نشان می دهد بین افزایش ابتلا به سرطان و کلر زنی آب آشامیدنی به دلیل تولید ترکیبات تری هالومتان (مانند کلروفرم) در این فرایند، ارتباط مستقیم وجود دارد. انواع خاصی از باکتری های متیلوتروف می توانند این ترکیبات را مصرف کنند. بنابراین حضور این باکتری ها در آب آشامیدنی تصفیه شده احتمال وجود این مواد در آب را مطرح می کند و وجود بیوفیلم ها در سیستم های فرسوده توزیع آب به حضور پایدا...
The effects of calcium, cupric, ferrous and ferric ions on the formation of trihalomethanes (THMs) and haloacetic acids (HAAs) were investigated using natural organic matter (NOM), small molecular weight NOM surrogates and natural water samples. The results showed that the effects were greatly dependent on the disinfection byproduct (DBP) precursor structure and molecular weight, and metal ions...
AIM This study examined the effects on disinfection by-product (DBP) concentrations of common household methods for processing drinking water. METHODS We investigated the effects of refrigerator storage, jug filtering, boiling in an electric kettle, and supply from an instant boiling water unit, with or without filtering, on four species of trihalomethanes (THMs) and nine species of haloaceti...
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