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A detection method for volatile organic compounds in water source pollution

A volatile organic compound and detection method technology, applied in the field of analysis and detection, can solve the problems of immature rapid detection methods, strong specificity, and long time consumption, and achieve good recovery, good reproducibility, and shortened purge effects

Inactive Publication Date: 2011-12-21
FOSHAN WATER GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional water quality detection methods are time-consuming and specific, and are not suitable for monitoring sudden water pollution
However, rapid detection methods for sudden pollution of water sources are still immature.

Method used

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  • A detection method for volatile organic compounds in water source pollution
  • A detection method for volatile organic compounds in water source pollution
  • A detection method for volatile organic compounds in water source pollution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Actual water source accidents (1): Two types of aldehyde substances pollute water sources.

[0031] The purge-trap-GC-MS method was used to analyze and measure the odorous water from normal pipe network points and complaint user pipe network points. The detection conditions were: purge and trap instrument conditions: sample volume: 5 mL; sample device temperature: 90 ° C; transfer line temperature: 150 °C; purge preparation temperature: 45 °C; valve oven temperature: 150 °C; dry gas flow standby temperature: 60 °C; sample transfer time: 0.35 min; pressurization time: 0.25 min; Standby flow rate: 20 mL / min; sample heater off (sample not heated); pre-purge time: 0.00 min; pre-purge flow rate: 40 mL / min; sample warm-up time: 1.00 min; purge temperature: low Purging preparation temperature: 45 °C; preheating temperature: 40 °C; purging time: 5.00 min; purging flow rate: 40 mL / min; purging and flushing time: 0.40 min; purging line time: 0.35 min; Purge time: 0.00 min (dry p...

Embodiment 2

[0034] Actual water source accidents (2): Benzene series pollution to water sources.

[0035] The purge-trap-GC-MS method was used to analyze and measure the odorous water from normal pipe network points and complaint user pipe network points. The detection conditions were: purge and trap instrument conditions: sample volume: 5 mL; sample device temperature: 90 ° C; transfer line temperature: 150 °C; purge preparation temperature: 45 °C; valve oven temperature: 150 °C; dry gas flow standby temperature: 60 °C; sample transfer time: 0.35 min; pressurization time: 0.25 min; Standby flow rate: 20 mL / min; sample heater off (sample not heated); pre-purge time: 0.00 min; pre-purge flow rate: 40 mL / min; sample warm-up time: 1.00 min; purge temperature: low Purging preparation temperature: 45 °C; preheating temperature: 40 °C; purging time: 5.00 min; purging flow rate: 40 mL / min; purging and flushing time: 0.40 min; purging line time: 0.35 min; Purge time: 0.00 min (dry purge not used...

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Abstract

The invention belongs to the technical field of analysis and detection, and relates to a detection method for volatile organic compounds in water source pollution, which is mainly used for detection of volatile organic pollutants with peculiar smell in water. The present invention establishes a purge-and-trap-GC-MS method for the determination of multi-component trace VOCs in drinking water, including steps such as sample collection, sample storage, sample measurement, standard curve formulation, and result calculation. The detection conditions of the instrument in the determination step are described in detail, providing a rapid early warning and emergency monitoring technology for sudden accidents of organic polluted water sources.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, and relates to a detection method for volatile organic compounds in water source pollution, which is mainly used for detection of volatile organic pollutants with peculiar smell in water. Background technique [0002] In my country's major rivers and lakes, such as the Yellow River, Yangtze River, Haihe River, Huaihe River, Liaohe River, Songhua River, Huangpu River, Tuojiang River and Taihu Lake, sudden water pollution accidents occur from time to time. According to statistics, there are 2-3 accidents per day on average. . Due to human error or natural disasters, the abnormal discharge or leakage of highly toxic pollutants in an instant will cause serious pollution and damage to water sources. It has the following major characteristics: suddenness, due to the fierceness of the attack, it is difficult to prevent it, it is difficult to take effective preventive measures, it is diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/08G01N1/10
Inventor 黄剑明叶挺进苏锡波周柏明刘伟陈小辉张再利罗旺兴黄禹坤梁咏梅陈锋华勃王茜杨欣
Owner FOSHAN WATER GRP
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