比光谱导数法同时测定食品中苯甲酸和糖精钠的含量

CORC > 集美大学

	比光谱导数法同时测定食品中苯甲酸和糖精钠的含量
	黄志勇 ; 赖海涛 ; 张晓京
刊名	http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=spfx200105022&dbcode=CJFQ&dbname=CJFQ2001
	2012-06-05 ; 2012-06-05
关键词	比光谱导数法苯甲酸糖精钠 derivative ratio spectrum method benzoic acid sodium saccharin TS207.3
其他题名	Determination of Benzoic Acid and Sodium Saccharin in Food by Derivative Ratio Spectrum Method
中文摘要	苯甲酸和糖精钠的吸收光谱重叠严重 ,本文建立了用比光谱导数法同时测定食品中两者含量的方法。结果表明 ,在不需要进行分离和掩蔽的条件下 ,可直接测定苯甲酸和糖精钠的含量 ,采用 2 4 5nm和 2 55nm分别作为两者的测量波长 ,其浓度分别在 0～ 90 μg/mL和0～ 10 0 μg/mL之内符合线性关系 ,回归的相关系数r均达 0 999以上。 5种食品中的苯甲酸和糖精钠含量测定的回收率分别为 97 7%～ 10 0 2 %和 10 1 2 %～ 10 4 4 % ,精密度 (测定 5次 )分别为 0 8%～ 4 9%和 0 9%～ 3 7%。此外 ,本文还讨论了波长、共存物、求导间隔等影响测定的因素 ,优化了测量条件。; Spectrums of benzoic acid and sodium saccharin are overlapped seriously in solution The method of determining their concentration in food by derivative ratio spectrum is proposed The linearity of benzoic acid and sodium saccharinis in the ranges from 0 to 90?μg/ml and 0 to 100?μg/ml,respectively, and the correlative coefficients“r” are all above 0 999 when their determining wave length is 245?nm and 255?nm,respectively The results of five kinds of food testes are as following:the recoveries of benzoic acid and sodium saccharin range from 97 7% to 100 2% and from 101 2% to 104 4%,respectively;their RSD(5 times) are less than 4 9% and 3 7%,respectively In addition, The influential factors,such as wavelength,concomitant,and the derivative interval etc are discussed, the determining conditions are optimized; 【作者单位】集美大学食品工程系!厦门； 361021 硕士；副教授； 361021；【作者英文名】Huang Zhiyong Lai Haitao Zhang Xiaojing (Dept of Food Engineering,Jimei University, Xiamen, 361021)
语种	中文
内容类型	期刊论文
源URL	[http://ir.calis.edu.cn/hdl/235041/18754]
专题	集美大学
推荐引用方式 GB/T 7714	黄志勇,赖海涛,张晓京. 比光谱导数法同时测定食品中苯甲酸和糖精钠的含量[J]. http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=spfx200105022&dbcode=CJFQ&dbname=CJFQ2001,2012, 2012.
APA	黄志勇,赖海涛,&张晓京.(2012).比光谱导数法同时测定食品中苯甲酸和糖精钠的含量.http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=spfx200105022&dbcode=CJFQ&dbname=CJFQ2001.
MLA	黄志勇,et al."比光谱导数法同时测定食品中苯甲酸和糖精钠的含量".http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=spfx200105022&dbcode=CJFQ&dbname=CJFQ2001 (2012).