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
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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). |
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