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Sulfur-removing material, purification column using same, and pretreatment method for analysis of organic substances

A technology of purification column and inorganic filling material, which is applied in the pretreatment field of purification column and organic substance analysis, to achieve the effect of reducing cost, improving precision and high sulfur removal capacity

Active Publication Date: 2020-02-18
TATSUTA ELECTRICWIRE & CABLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the separation medium described in Patent Document 3 is used for chromatographic separation performed at very high pressure, etc., the main purpose is to increase the separation efficiency by increasing the thermal conductivity of the separation medium, and it has nothing to do with sulfur removal as a pre-analytical treatment.

Method used

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  • Sulfur-removing material, purification column using same, and pretreatment method for analysis of organic substances
  • Sulfur-removing material, purification column using same, and pretreatment method for analysis of organic substances
  • Sulfur-removing material, purification column using same, and pretreatment method for analysis of organic substances

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Embodiment

[0052] Examples of the present invention are shown below, but the present invention is not limited to the following examples. In addition, unless otherwise specified, the following compounding ratio etc. are mass standards.

[0053] 1. Fabrication of Sulfur Removal Materials

[0054] As an example, 20 g of silica gel 60N (Cat. No. 37565-79) manufactured by Kanto Chemical Co., Ltd. and 1.4 g of various inorganic particles (silver-coated copper powder) shown in Table 1 were mixed with a mixer (TIETECH Co. , Ltd. manufactured AUTOMATICMIXER S-100) for vibration mixing. In addition, as a comparative example, silver nitrate silica gel (silver content: 6.5% by mass) was used.

[0055] In addition, the average particle diameter and specific surface area of ​​the silver-coated copper powder were measured using the laser diffraction / scattering type particle size distribution measuring apparatus (manufactured by Nikkiso Co., Ltd., MT3300EXII).

[0056] 2. Evaluation of Sulfur Removal...

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Abstract

A mixture of an inorganic filler and inorganic particles that have a metal that reacts with sulfur on at least parts of the surfaces thereof is used as a sulfur-removing material that is less expensive than silver-nitrate silica gel and exhibits high sulfur-removal effectiveness. A pretreatment for organic-matter analysis is performed in a purification column using said sulfur-removing material.

Description

technical field [0001] The present invention relates to a sulfur removal material that can be suitably used for pretreatment of organic substance analysis such as residual organic pollutants, a purification column using the same, and a pretreatment method for organic substance analysis. Background technique [0002] It is used as a method for improving the analysis of qualitative and quantitative analysis of residual organic pollutants (Persistent Organic Pollutants, POPs) such as dioxins and polychlorinated biphenyls (PCBs) contained in waste water, waste gas, soil, etc. The pre-processing of the accuracy is carried out by performing the operation of removing the analytical interference components in the sample in advance. [0003] Specifically, the sample is extracted with toluene, hexane, etc., and the extract is purified using, for example, a multilayer silica gel column. As a column packing material for removing sulfur in the sample, JIS K0311 ( Silver nitrate silica g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/00G01N30/88
CPCG01N30/00G01N30/88
Inventor 寺田恒彦村尾勉高野雄真森田崇野间雄
Owner TATSUTA ELECTRICWIRE & CABLE
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