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Method for determining butyl acetate and cyclohexanone in water and soil

A technology of butyl acetate and cyclohexanone, which is applied in the detection field, can solve the problems of useless analysis of standards and methods for butyl acetate and cyclohexanone in water and soil, and achieve wide application range, simple measurement process, and low minimum concentration Effect

Pending Publication Date: 2020-06-05
浙江格临检测股份有限公司
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Problems solved by technology

[0004] At present, there are butyl acetate and cyclohexanone in the monitoring waste gas in the field of environmental monitoring, but there are no standards and methods for analyzing water and soil butyl acetate and cyclohexanone. The present invention solves such problems

Method used

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  • Method for determining butyl acetate and cyclohexanone in water and soil
  • Method for determining butyl acetate and cyclohexanone in water and soil
  • Method for determining butyl acetate and cyclohexanone in water and soil

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Embodiment Construction

[0041] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0042] A method for measuring butyl acetate and cyclohexanone in water and soil, comprising the steps:

[0043] Step 1, sample pretreatment to obtain the sample;

[0044] For low-content samples: Weigh about 5g of soil samples into a sample bottle to obtain a sample;

[0045] If the direct measurement of the sample exceeds the upper limit of determination, it is judged to be a high-content sample. Weigh 5g of the sample into the sample bottle, add 10ml of methanol into the bottle, shake it for 2min, and let it stand still; take the methanol extract, dilute to 5ml, Get a sample.

[0046] Step 2, purging and enriching the butyl acetate and cyclohexanone in the sample with high-purity helium in the trapping tube;

[0047] Step 3, heat the trapping tube to 140°C and backflush with high-purity helium, the components desorbed by heat enter t...

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Abstract

The invention discloses a method for determining butyl acetate and cyclohexanone in water and soil, which comprises the following steps: 1, pretreating a sample to obtain a sample; 2, purging and enriching butyl acetate and cyclohexanone in the sample in a trapping tube by using high-purity helium; step 3, heating the trapping tube to 140 DEG C, carrying out back flushing by using high-purity helium, enabling the thermally desorbed components to enter gas chromatography, separating, and detecting by using a mass spectrometer; step 4, quantifying by comparing with a standard spectrogram of a to-be-detected target object, determining the retention time qualitatively and quantifying by an external standard method; according to the invention, the determination process is simple, and the determination accuracy and precision are high; the lowest detectable concentration is low, and the application range is wide.

Description

technical field [0001] The invention relates to the detection field, in particular to a method for measuring butyl acetate and cyclohexanone in water and soil. Background technique [0002] N-butyl acetate, referred to as butyl acetate. Colorless transparent liquid with pleasant fruity smell. The lower homologues are poorly soluble in water; they are miscible with organic solvents such as alcohols, ethers, and ketones. flammable. The acute toxicity is small, but it is highly irritating to the eyes and nose, and can cause anesthesia at high concentrations. N-butyl acetate is an excellent organic solvent, and it has good solubility properties for ethyl cellulose, cellulose acetate butyrate, polystyrene, methacrylic resin, chlorinated rubber and various natural gums, so It is widely used in industry; however, it has a strong stimulating effect on the eyes and upper respiratory tract, and has an anesthetic effect. Inhalation of high concentration of this product may cause t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/08G01N30/72
CPCG01N30/08G01N30/72
Inventor 孟镝张金玲
Owner 浙江格临检测股份有限公司
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