Detection method for simultaneously determining bromine, iodine and phosphorus in water sample or beverage by ICP-MS

Abstract

The invention discloses a detection method for simultaneously determining bromine, iodine and phosphorus in a water sample or beverage by an ICP-MS. After the water sample or beverage is subjected tospecial extraction and concentration treatment, the inductively coupled plasma mass spectrometer (ICP-MS) feeds and detects bromine, iodine and phosphorus in the water sample or the beverage simultaneously. The method comprises the following steps: S1, preparing an internal standard solution and a standard solution, and calibrating the inductively coupled plasma mass spectrometer; S2, analyzing and constructing a standard curve to obtain a regression equation; S3, performing extraction and concentration treatment on the water sample or the beverage, and performing machine detection; and S4, calculating the concentration of each element in the detection sample. The method has the beneficial effects that after the water sample or beverage is subjected to special extraction and concentrationtreatment, the inductively coupled plasma mass spectrometer is adopted, so that bromine, iodine and phosphorus elements in the sample can be simultaneously, quickly and accurately detected.

Description

technical field [0001] The invention relates to the field of water quality and food detection, in particular to a detection method for simultaneously determining bromine, iodine and phosphorus in water samples or beverages by using ICP-MS. Background technique [0002] Water is an important resource for the survival of all life including inorganic compounds and human beings, and is also the most important component of organisms. However, due to the vast territory of our country, the geographical characteristics involved are relatively complicated, and the distribution and total amount of corresponding water resources are also There are differences, so the inorganic and organic elements doped in water in different regions are quite different. [0003] Bromine and iodide ions are the main causes of bromine and iodide disinfection by-products in the process of drinking water disinfection. Studies have shown that when the content of organic matter in water is constant, the amoun...

AI Technical Summary

Problems solved by technology

However, because the operation of the instrument itself is more complicated, its parameters have a greater impact on the results of the determination. Therefore, when establishing a complete set of methods for the determination of bromine, iodine, and phosphorus non-metals, it is also necessary to check the parameters of the instrument and the measurement conditions. Optimized to achieve the best measurement results

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