Standard sampling device

Abstract

The invention relates to a standard sampling device, which comprises a liquid feed pipe with an opened upper part, and an upswept liquid sampling pipe communicated with a side face of the liquid feed pipe, wherein a bottleneck plug and a sampling suction tube extending from the exterior of the bottleneck plug of the liquid sampling tube to the interiors of the liquid sampling tube and the liquid feed tube are arranged on the end part of the liquid sampling tube; and an ultrasonic atomization device is arranged on the bottom part of the liquid feed pipe. According to the standard sampling device, through carrying out stirring and atomization and / or temperature control on a sampling environment, the compositions of a sampling sample are uniform, so that the accuracy and the precision of a detection result are further improved. The standard sampling device has a simple structure and strong generality, is suitable for sampling various liquids, and is particularly suitable for sampling water samples with on-line total organic carbon and total nitrogen analysis.

Description

technical field [0001] The present invention relates to the technical field of sample analysis, more specifically, the present invention relates to a standard sampling device, which can be used for sampling water quality samples, especially suitable for but not limited to an online total organic carbon and total nitrogen analysis of water samples sample sampling. Background technique [0002] In recent years, with the improvement of urbanization rate and the development of large-scale industry, organic pollutants in the water environment have gradually increased. The discharge of organic pollutants is the main cause of pollution in rivers and lakes. Organic pollutants exist in water, soil, accumulation It directly affects the quality of the environment, and has caused great harm to the living environment and human health of human beings. Therefore, the treatment and detection of organic pollutants has become a research hotspot. However, the persistent organic pollutants in...

AI Technical Summary

Problems solved by technology

[0004] However, when the sampling device of the TOC and TN detection system used in the prior art is applied to water quality sample analysis, especially when the sample analysis containing a large amount of particles and suspended solids, the sample sampling port is easily blocked, and the sampling is uneven, and due to the sampling Low uniformity also leads to low accuracy and precision of test results

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