نتایج جستجو برای: water chemical contamination
تعداد نتایج: 928472 فیلتر نتایج به سال:
The contamination of drinking water is potentially harmful and poses a risk to public health. If any observation suggests apotential contamination of drinking water, such as consumer complaints about the alteration of the water’s organolepticproperties, the appearance of health problems or an alarm triggered by sensors, a rapid identification of the hazard causing theproblem is nece...
The widespread chemical contamination of the earth’s air, food, and water with its effects on various biological systems has been described in nearly 5,000 scientific articles. At present, chemical sensitivity can be defined as an adverse reaction to ambient levels of toxic chemicals, which are generally accepted as being "subtoxic," in environmental air (home and public buildings), food, and w...
abstract aims: lead is emerged as one of the most hazardous elements, existing in the air and soil, which can create irreparable outcomes in the human body due to its highly severe damages. the aim of this study was to determine the relationship between lead level and the respiratory diseases in tiran & karvan region, iran. instrument & methods: the research methodology was analytical based on ...
over a period of three months (summer), 108 samples of water collected from four hospitals in te-hran. they were taken from numerous potable and non-potable water, including main supply cis-terns, calorifiers, hot and cold tap water, shower, cooling tower and drain of air condition system. culturing of concentrated and non-concentrated water samples on buffered charcoal yeast extract (bcye) aga...
The Water Framework Directive requires the assessment of the ecological status of transitional waters considering the fish component. An original methodology, based on a pressure-impact approach, was established to develop a multimetric fish-based index to characterize the ecological quality of French estuaries. An index of contamination, based on the chemical pollution affecting aquatic system...
Abstract: By 2025, when world population is projected to be 8 billion, improving living standards without destroying the environment is a global challenge. Contamination of the environment with pathogens and heavy metal ions has been an important concern throughout the world for decades. Development of sensors for real-time detection of toxic metals and bacterial contamination in water supplies...
Intersex fish, antibiotic-resistant bacteria, falling sperm counts, and contamination of drinking water: these are just some of the potential consequences related to the growing problem of pharmaceutical pollution. With the rising use and complexity of modern pharmacologic care, many investigators have focused their efforts on demonstrating that drugs administered to patients will inevitably fi...
BACKGROUND Current priorities for diarrhoeal disease prevention include use of sanitation and safe water. There have been few attempts to quantify the importance of animal faeces in drinking-water contamination, despite the presence of potentially water-borne zoonotic pathogens in animal faeces. OBJECTIVES This study aimed to quantify the relationship between livestock ownership and point-of-...
Rapid detection of chemical contamination in the distribution system is essential in protecting public health, and using water quality surrogates to signal a contamination event offers the advantage of detecting a large number of chemicals. The concern over using surrogate parameters is whether they offer the ability to detect contaminants at concentrations low enough to prevent serious illness...
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