VOC's in drinking water include compounds already present in natural water sources, as well as contaminants produced by industry and during daily activities. These are pollutants from agricultural activity, water purification chemicals, pesticides used for public health initiatives and pharmaceutical products. VOC's are known to be responsible for many human health hazards. In general, exposure to low levels of certain VOC's over a long period of time may lead to impaired immune system function, liver damage and increased risk of cancer. At elevated levels, even short-term exposure to certain VOC's can cause central nervous system depression. As a result, in order to maintain a fixed drinking water quality, each country sets regulations and analyzes for chemical contaminants in drinking water. In India, Bureau of Indian Standard (BIS) has established safe drinking water standards.
This study reports a sensitive analytical method using Shimadzu GCMS-QP2020 NX single quadrupole system with HS-20 dynamic headspace autosampler to determine 51 VOC's at trace level.