A rapid liquid chromatography determination of free formaldehyde in cod

被引：24

作者：

Storey, Joseph M. ^{[1
]}

Andersen, Wendy C. ^{[1
]}

Heise, Andrea ^{[2
]}

Turnipseed, Sherri B. ^{[1
]}

Lohne, Jack ^{[1
]}

Thomas, Terri ^{[2
]}

Madson, Mark ^{[1
,2
]}

机构：

[1] US FDA, Anim Drugs Res Ctr, Denver, CO 80225 USA

[2] US FDA, Denver Lab, Denver, CO 80225 USA

来源：

FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT | 2015年 / 32卷 / 05期

关键词：

liquid chromatography; cod; formaldehyde; 2,4-dinitrophenylhydrazine; EXTRACTION; SQUID; FISH;

D O I：

10.1080/19440049.2015.1020530

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A rapid method for the determination of free formaldehyde in cod is described. It uses a simple water extraction of formaldehyde which is then derivatised with 2,4-dinitrophenylhydrazine (DNPH) to form a sensitive and specific chromophore for high-performance liquid chromatography (HPLC) detection. Although this formaldehyde derivative has been widely used in past tissue analysis, this paper describes an improved derivatisation procedure. The formation of the DNPH formaldehyde derivative has been shortened to 2min and a stabilising buffer has been added to the derivative to increase its stability. The average recovery of free formaldehyde in spiked cod was 63% with an RSD of 15% over the range of 25-200mgkg(-1) (n=48). The HPLC procedure described here was also compared to a commercial qualitative procedure - a swab test for the determination of free formaldehyde in fish. Several positive samples were compared by both methods.

引用

页码：657 / 664

页数：8

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