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基于光声光谱法检测盐酸克伦特罗的研究

2016-10-19龚雨含王崇皓马亮龚瑞昆

湖北农业科学 2016年5期

龚雨含 王崇皓 马亮 龚瑞昆

摘要:采用光声光谱法进行测量,利用加权修正的方法建立了盐酸克伦特罗光声光谱实时在线测量模型,分析了猪肉中水对其测量的干扰机制,为盐酸克伦特罗测量仪的设计提供理论基础。设计了猪肉中盐酸克伦特罗光声光谱检测试验系统,并将光声光谱法和传统的紫外光谱法进行对比,绝对误差明显降低,验证了该方法可行性及快速性。

关键词:光声光谱法;盐酸克伦特罗;交叉敏感;加权修正;在线测量

中图分类号:TP212 文献标识码:A 文章编号:0439-8114(2016)05-1267-04

DOI:10.14088/j.cnki.issn0439-8114.2016.05.045

Study of Clenbuterol Hydrochloride Based on Detection of

the Photoacoustic Spectroscopy

GONG Yu-hana,WANG Chong-haob,MA Liangc,GONG Rui-kuna

(a.College of Electrial Engineering; b.Library; c. Qinggong College, Tangshan 063000, Hebei, China)

Abstract: In recent years, frequently occurred poisoning incidents from clenbuterol caused close attention of society, and how to check it fast and accurately became important. In this paper, the real-time online measurement model for clenbuerol was derived based on the test by photoacoustic spectroscopy measurements and added the weighted correction coefficient. And the interference mechanism from water in meat was also analyzed. It provided a theoretical basis for the design of clenbuterol tester. In this experiment, the photoacoustic spectroscopy system for clenbuterol was designed and compared with traditional UV spectroscopy, the results proved that this method was feasible and faster.

Key words: photoacoustic spectroscopy; clenbuterol; cross-sensitivity; weighted correction; online measurement

中國生猪消耗量大,生猪的品质关系到消费者的健康,关于猪肉的食品安全问题受到执法者和消费者的重视[1,2]。由于高额利润的驱使,一些不法分子在饲料中添加有毒添加剂(如色素、激素、瘦肉精等),对消费者的健康造成了很大的危害。近年来,食品安全问题被全世界高度重视,双汇集团的“瘦肉精事件”严重刺痛了广大消费者的神经,瘦肉精中毒事件时有发生,解决瘦肉精问题迫在眉睫。

政府也对生猪生产过程中瘦肉精使用加大了监管和打击力度,但由于目前的检测方法还存在检测精度低、抗干扰能力差、不能实时在线检测等缺陷,对大规模快速检测生猪产品形成了很大的制约[3,4]。这就需要找到一种更加高效准确的测量方法,用以解决瘦肉精检测问题。光声光谱法是一种实时在线检测方法,对弱吸收物质有较高的检测精度。提出将光声光谱技术运用到生猪中瘦肉精含量的检测中,其目的是实现对该有毒物质的快速、准确及实时在线的微量检测。……

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