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A detection method for triclosan and triclocarban in sludge compost

A triclocarban and detection method technology, applied in the field of environmental chemical analysis, can solve the problems of solid-phase small column clogging and purification process difficulties

Active Publication Date: 2021-11-19
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accelerated solvent extraction takes less time, consumes less solvent, and has high extraction efficiency. However, due to the complexity of the compost matrix, the process of composting municipal sludge requires the addition of additives such as straw, chaff, hay, dry leaves, wood chips or sawdust for conditioning. agent; resulting in the extraction of TCS and TCC in municipal sludge compost, the obtained extract contains a large amount of pigments and lipids, and the further purification process is very difficult: if the solid phase column is used to purify the extract, it often leads to solid phase Cartridge clogged

Method used

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  • A detection method for triclosan and triclocarban in sludge compost
  • A detection method for triclosan and triclocarban in sludge compost
  • A detection method for triclosan and triclocarban in sludge compost

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Embodiment 1

[0097] A detection method for triclosan and triclocarban in sludge composting, comprising the following steps:

[0098] (1) Collection of sludge compost samples: The sludge compost samples were taken from the composting workshop of a sewage treatment plant, and the composting process was an automatic oxygen fermentation process.

[0099] (2) Acquisition of pretreatment samples: the collected sludge compost samples were stored at -20°C, frozen at -18°C for 10 hours, then dried at -60°C for 72 hours, passed through a 1 mm sieve and ground to obtain a particle size of 50 ~100 mesh pretreated samples.

[0100] (3) Obtaining the sample to be extracted: Mix 0.2 g of copper powder, 0.6 g of the pretreated sample and 1 g of diatomaceous earth to obtain the sample to be extracted.

[0101] (4) Filling of the extraction cell: The volume of the extraction cell selected in this example is 34 mL, and the bottom-up filler of the extraction cell includes: glass fiber membrane, 0.2 g anhydro...

Embodiment 2

[0112] According to the actual TCS and TCC test results in a sludge compost in Shanghai, the concentration of triclosan is 0.6~0.8 μg / g, and that of triclocarban is 1.3~1.5 μg / g.

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Abstract

The invention relates to the technical field of environmental chemical analysis, and provides a detection method for triclosan and triclocarban in sludge compost. In the present invention, graphitized carbon black, florisil in the extraction tank, N-propyl ethylenediamine filler and neutral alumina can treat lipids (such as waxy, fat) and pigments in sludge composting At the same time, the adsorption of the above-mentioned adsorption materials to the target substances triclosan and triclocarban is small. Using liquid chromatography-mass spectrometry detection, the accurate determination of triclosan and triclocarban in sludge compost samples was realized.

Description

technical field [0001] The invention relates to the technical field of environmental chemical analysis, in particular to a detection method for triclosan and triclocarban in sludge compost. Background technique [0002] Triclosan (TCS) and Triclocarban (Triclocarban, TCC) are high-efficiency broad-spectrum antibacterial agents, which are widely used in skin care products because of their good skin compatibility, strong fat solubility and high bactericidal ability , textiles, deodorants and wound disinfectants etc. However, both TCS and TCC have strong biological toxicity, and are a new type of endocrine disruptor, which can be enriched in organisms through the food chain, which may cause developmental abnormalities, reproductive dysfunction and cancer, etc., and have harmful effects on human health and ecosystems powerful potential impact. At present, the important source of TCS and TCC in the environment is the sewage and sediment of sewage treatment plants. Due to the hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/30G01N30/32G01N30/34G01N30/72
CPCG01N30/02G01N30/06G01N30/30G01N30/32G01N30/34G01N30/72G01N2030/062G01N2030/324
Inventor 张倩
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS