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High performance liquid chromatography method for detecting aldehyde and ketone compounds in air

A high-performance liquid chromatography, compound technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of long analysis time, complex mobile phase, poor resolution, etc.

Inactive Publication Date: 2018-09-07
厦门鉴科检测技术有限公司
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Problems solved by technology

[0003] High performance liquid chromatography is currently a common method for the determination of aldehydes and ketones in the environment, such as EPA methods: EPA554, EPA1667, EPA8315A, TO-5, TO-11A; CARB 1004; Chinese standards: HJ / T 400-2007 and ISO16000- 3:2011, but these methods generally have disadvantages such as complex mobile phase, poor resolution, and long analysis time

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  • High performance liquid chromatography method for detecting aldehyde and ketone compounds in air
  • High performance liquid chromatography method for detecting aldehyde and ketone compounds in air
  • High performance liquid chromatography method for detecting aldehyde and ketone compounds in air

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Embodiment Construction

[0040] Such as figure 1 As shown, a kind of high-performance liquid chromatography for measuring aldehydes and ketones in the air disclosed in this embodiment comprises the following steps:

[0041] S1. Sample collection and pretreatment

[0042] The aldehydes and ketones in the air are adsorbed to the DNPH (2,4-dinitrophenylhydrazine)-coated silica gel sampling tube through the sampling pump, so that the aldehydes and ketones react with the DNPH in the silica gel sampling tube to have ultraviolet absorption And stable hydrazone compounds, the selection of sampling flow rate and sampling time is based on the fact that the sampling column is not saturated and the sampling volume can meet the detection requirements of the instrument. Generally, the sampling flow rate and sampling time are 0.1-2L / min and 1-3h; After sampling, the samples were stored in a refrigerator at 4 °C for pretreatment;

[0043] Take a certain volume of acetonitrile (such as 5 mL) as the elution solvent o...

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Abstract

The invention discloses a method for detecting aldehyde and ketone compounds in air. The method comprises the following steps: S1, collecting and preprocessing a sample; S2, preparing a standard solution; S3, selecting apparatus conditions; S4, verifying the reliability of the method; and S5, qualitatively and quantitatively analyzing the sample. Baseline separation and quantitative analysis of formaldehyde, acetaldehyde, acetone and other ten aldehyde and ketone compounds in the air can be completed within 15 min through using only one analysis column with tetrahydrofuran-free ammonium acetate / acetonitrile as a mobile phase. The method is simple, fast and accurate.

Description

technical field [0001] The invention belongs to the field of environmental chemistry, in particular to a high performance liquid chromatography method for measuring aldehyde and ketone compounds in the air. Background technique [0002] Aldehyde and ketone compounds are currently one of the ten largest chemicals in the world. They not only have strong irritating effects on the eyes, skin and respiratory tract, but also have teratogenic and carcinogenic effects on humans. [0003] High performance liquid chromatography is currently a common method for the determination of aldehydes and ketones in the environment, such as EPA methods: EPA554, EPA1667, EPA8315A, TO-5, TO-11A; CARB 1004; Chinese standards: HJ / T 400-2007 and ISO16000- 3:2011, but these methods generally have disadvantages such as complex mobile phase, poor resolution, and long analysis time. Taking the CARB 1004 method as an example, under the required experimental conditions, methyl ethyl ketone and butyraldehy...

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Application Information

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IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/884
Inventor 黄雄风李平林志杰钟林陈召锦
Owner 厦门鉴科检测技术有限公司
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