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Method for determining eight kinds of odorous substances in water simultaneously

A substance and odor technology, applied in the field of natural environmental water quality monitoring, can solve problems such as valve core wear, pipeline blockage, and effect of purging efficiency, and achieve high sensitivity, high degree of automation, and high sensitivity.

Inactive Publication Date: 2011-11-23
INST OF AQUATIC LIFE ACAD SINICA
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Problems solved by technology

But the disadvantage is obvious. Sodium chloride can be brought to the top of the purge pipe by the purge gas, and then washed into the pipeline and valve, which often leads to blockage of the pipeline and wear of the valve core.
Similarly, the sample temperature is not considered, and different sample temperatures have a significant impact on the efficiency of the purge

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  • Method for determining eight kinds of odorous substances in water simultaneously
  • Method for determining eight kinds of odorous substances in water simultaneously
  • Method for determining eight kinds of odorous substances in water simultaneously

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Embodiment Construction

[0044] Below in conjunction with specific embodiment the inventive method is described in further detail:

[0045] A method for simultaneously measuring eight kinds of water body odor substances, the steps are as follows:

[0046] (1) The connection and setting of the instrument

[0047] A. Connection: For the communication connection between the automatic purge and trap sample concentrator and the gas phase, refer to the Eclipse purge and trap sample concentrator operation manual (version 2.0), pages 22 to 24. For the gas path connection between the purge and trap sample concentrator and the gas phase, refer to the Eclipse purge and trap sample concentrator operation manual (version 2.0), pages 48 to 50.

[0048] B. Instrument settings:

[0049] a. Purge and trap sample concentrator: use No. 7 trap (American OI Analytical Instrument Company, the filler is TENAX (2,6-diphenylene oxide polymer), specific surface area: 35m 2 / g, non-polar, the maximum temperature that can wit...

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Abstract

The invention belongs to the technical field of natural environment water quality monitoring and discloses a method for determining eight kinds of common odorous substances in water simultaneously through use of a method of combining purge-and-trap and gas chromatography / mass spectrometry. The method can be adopted to determine eight kinds of common odorous substances such as dimethyl sulfide (DMS), dimethyl trisulfide (DMTS), 2-isopropyl-3-methoxy pyrazine (IPMP), 2-isobutyl-3-methoxy pyrazine (IBMP), 2-methyl isobornyl (MIB), beta-cyclocitral, geosmin (GSM) and beta-ionone in water simultaneously. Any report on the method for determining the eight kinds of substances in one step is not present yet. The method disclosed by the invention fills the gap and can be used for quantitatively analyzing the eight kinds of odorous substances in water in one step, so that the detection efficiency is greatly increased.

Description

technical field [0001] The invention relates to the technical field of natural environment water quality monitoring, in particular to a method for simultaneously measuring eight kinds of odorous substances in water. Background technique [0002] Odor substances have a significant impact on tap water and aquatic products because of their foul smell, and cause huge economic losses. Complaints about landscape water bodies, tap water, and aquatic products have increased in recent years, especially during algae bloom outbreaks. In addition to 2-methylisoborneol, geosmellingin, 2-isopropyl-3-methoxypyrazine and 2-isobutyl-3-methoxypyrazine, which have received much attention, during algae decomposition and decay Methyl sulfide, dimethyl trisulfide, beta-cyclic citral and beta-ionone, etc. produced in the process are also receiving more and more attention. Because these odorous substances often erupt at the same time, the source, biotransformation and odor removal of these odorou...

Claims

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Application Information

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IPC IPC(8): G01N30/72G01N30/06
Inventor 谢平邓绪伟梁高道陈隽齐敏姜艳马志梅
Owner INST OF AQUATIC LIFE ACAD SINICA
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