反相停留流动注射-催化光度法测定自来水及食品中微量亚硝酸盐含量

CORC > 集美大学

	反相停留流动注射-催化光度法测定自来水及食品中微量亚硝酸盐含量
	黄志勇 ; 张强 ; 许锦标 ; 李程琴 ; 陈发河
刊名	http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=zwjz200703009&dbcode=CJFQ&dbname=CJFQ2007
	2012-06-05 ; 2012-06-05
关键词	反相流动注射催化光度法亚硝酸盐自来水食品 Reverse phase flow injection analysis Catalytic spectrophotometry Nitrite Tap water Foods O657.3
其他题名	Determination of trace nitrite in tap water and foods by reverse phase flow injection coupled with catalytic spectrophotometry
中文摘要	目的:测定自来水及食品中微量NO2-的含量。方法:利用硫酸介质中NO2-对溴酸钾氧化结晶紫的催化作用,建立室温下反相停留流动注射催化动力学光度法。结果:测得自来水中的NO2-含量为0.013μg/ml,相对标准偏差为3.8%(n=15),加标平均回收率为99.7%;测得火腿肠和榨菜中的NO2-含量分别为7.5 mg/kg和5.2 mg/kg,测定值与产品的标称值基本相符。实验还考察了停留时间、硫酸和溴酸钾的浓度以及流速等条件对测量的影响并进行优化。方法的检出限为0.75μg/L,在0.01~0.1μg/ml范围内呈线性关系。结论:方法准确、可靠、简便,试剂消耗量少,适用于饮用水及其它食品中微量NO2-含量的测定。; Objective:To determine trace nitrite in tap water and foods.Methods:At room temperature,a flow injection coupled with catalytic spectrophotometry,using the indicating reaction between bromate and crystal violet,was used.Results:The experimental conditions such as the stop time,the concentration of acid and bromate,and the flow rate were optimized.Under optimum conditions linear response ranged from 0.01 to 0.1 μg/ml.The concentration of NO-2 in tap water measured was 0.013 μg/ml with a 3.8% of RSD(n=15).The average recovery tested with adding standards was 99.7%,and the detection limit estimated with 3-fold standard deviation was 0.75 μg/L.Meanwhile,the established method,with the merits of high sensitivity and precision,was successfully used for the determination of NO-2 in the samples of hum sausage and preserved azechuan pickle.Conclusion:With the merits of high sensitivity and precision,the method is suitable for the measurement of trace nitrite in drinking water and foods.; 【作者单位】集美大学生物工程学院；集美大学生物工程学院福建厦门361021；福建厦门361021；【作者英文名】Huang Zhi-yong,Zhang Qiang,Xu Jin-biao,Li Cheng-qin,Chen Fa-He(College of Bioengineering,Jimei University,Xiamen 361021,China)
语种	中文
内容类型	期刊论文
源URL	[http://ir.calis.edu.cn/hdl/235041/18746]
专题	集美大学
推荐引用方式 GB/T 7714	黄志勇,张强,许锦标,等. 反相停留流动注射-催化光度法测定自来水及食品中微量亚硝酸盐含量[J]. http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=zwjz200703009&dbcode=CJFQ&dbname=CJFQ2007,2012, 2012.
APA	黄志勇,张强,许锦标,李程琴,&陈发河.(2012).反相停留流动注射-催化光度法测定自来水及食品中微量亚硝酸盐含量.http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=zwjz200703009&dbcode=CJFQ&dbname=CJFQ2007.
MLA	黄志勇,et al."反相停留流动注射-催化光度法测定自来水及食品中微量亚硝酸盐含量".http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=zwjz200703009&dbcode=CJFQ&dbname=CJFQ2007 (2012).