Determination Of Several Trace Elements In Drinking Water

Water is the most precious natural resources of human beings, and it is one of the most important material for human being. Since twentieth Century, with the acceleration of the industrialization process, the growth of human population, the accelerated progress of the society, the rapid development of economy, the pollution of drinking water resources is becoming more and more intensified. The safety of drinking water in daily life is a serious threat. The health safety of drinking water is related to the prosperity and stability of the society, the long-term stability of the country and the health of the people. It is of great practical significance to carry out a census of harmful substances in drinking water. At the same time it is closely related with our daily life, it is of far-reaching significance of the project. However, due to many factors, the vast majority of small and medium cities are still using the capacity method to determine the harmful substances in the water. Therefore, it is necessary to improve these methods.This paper expounds the source of water will harm human health in several harmful metal elements, calcium ion, magnesium ion, chlorine ion, nitrite ion, fluorine ion; harmful metal elements caused by the daily life of the people; simple and effective at present people using the sample processing method; and the use of atomic absorption spectrophotometry determination of cadmium, manganese, lead, mercury, arsenic in water Determination of harmful metal ions to human health by atomic fluorescence spectrometry; Determination of total hardness by two sodium EDTA titration; Determination of chloride ions by silver nitrate titration method; anaphthylamine visual colorimetric determination of nitrite ion and the use of visual colorimetry with zirconium the determination of fluorine ion.In this paper, the emphasis is on the improvement of some of the original method, in order to avoid interference, rapid and accurate determination of harmful substances in drinking water, get accurate results, in order to meet the needs of water quality testing. This paper provides a reliable reference data for the investigation of harmful substances in water, and provides reliable information for the creation of higher quality and more healthy living environment.