ICP-OES测定羊肉汤中二氧化钛的含量
|
摘要
建立一种简单、快速、准确测定羊肉汤中二氧化钛含量的分析方法。样品前处理先通过硝酸-高氯酸混合酸湿法消解,冷却后再加入硫酸和硫酸铵继续消解,用电感耦合等离子体发射光谱法测定消解液中钛含量,从而计算得出二氧化钛含量。钛在0～5.0 mg/L线性关系良好,相关系数为0.999 9,方法检出限为0.04 mg/kg;对样品进行5.0, 10.0和100.0 mg/kg 3个不同浓度加标试验,回收率为95.5%～103.0%,相对标准偏差为1.68%～4.70%(n=6)。该方法简便、快捷,有较高的灵敏度、准确度、精密度和较低的检出限,适用于羊肉汤中二氧化钛的测定。
A simple, rapid and accurate method for determining the contents of titanium dioxide in mutton soup was established, determined by ICP-OES. The pretreatment of the sample was followed by digestion with nitric acid-perchloric acid mixed acid and then quenched by the addition of sulfuric acid and ammonium sulfate to continue to heating digestion. The titanium content of titanium dioxide was determined by ICP-OES, and the content of titanium dioxide in sample was calculated according to the mass fraction. The linearity of titanium was good in the range of 0-5.0 mg/L, with correlation coefficient of 0.999 9 and the detection limit was 0.04 mg/kg. The recoveries of the method in 5.0, 10.0 and 100.0 mg/kg were within 95.5%-103.0% and the relative standard deviations were within 1.68%-4.70%(n=6). The method was convenient, rapid with good sensitivity, accuracy precision, and detection limit. It was suitable for the determination of titanium dioxide in mutton soup.
A simple, rapid and accurate method for determining the contents of titanium dioxide in mutton soup was established, determined by ICP-OES. The pretreatment of the sample was followed by digestion with nitric acid-perchloric acid mixed acid and then quenched by the addition of sulfuric acid and ammonium sulfate to continue to heating digestion. The titanium content of titanium dioxide was determined by ICP-OES, and the content of titanium dioxide in sample was calculated according to the mass fraction. The linearity of titanium was good in the range of 0-5.0 mg/L, with correlation coefficient of 0.999 9 and the detection limit was 0.04 mg/kg. The recoveries of the method in 5.0, 10.0 and 100.0 mg/kg were within 95.5%-103.0% and the relative standard deviations were within 1.68%-4.70%(n=6). The method was convenient, rapid with good sensitivity, accuracy precision, and detection limit. It was suitable for the determination of titanium dioxide in mutton soup.
引文
[1]司徒杰生.化工产品手册:无机化工产品[M].北京:化学工业出版社, 2002:642-644.
[2]李英杰,白明.二氧化钛的特性及在食品中的应用[J].食品安全导刊, 2010(8):58-59.
[3]王京善,孙秀鸾,董国强.食品中二氧化钛测定方法的探讨[J].预防医学文献信息, 2001, 7(6):662-663.
[4]王红.糖果中新型着色剂二氧化钛检测方法的研究[J].中国卫生检验杂志, 2008, 18(9):1755-1756.
[5]薄晓菲,王洪伟,李佳,等.过氧化氢法测定魔芋凝胶食品中二氧化钛的研究[J].食品工业科技, 2010(3):357-359.
[6]中华人民共和国国家卫生和计划生育委员会.食品中二氧化钛的测定:GB 5009.246—2016[S].北京:中国标准出版社, 2016.
[7]彭青枝,潘思铁,李涛,等. ICP-AES测定面粉中二氧化钛[J].中国卫生检验杂志, 2008, 18(9):1768-1769.
[8]张磊,余永丽.电感耦合等离子体发射光谱法测定食品中二氧化钛含量[J].理化检验(化学分册), 2013, 49(11):1387-1388.
[9]郝大情,杨瑞春,李永利,等. ICP-AES测定食品中二氧化钛的方法研究[J].中国卫生检验杂志, 2013, 23(8):1849-1851.
[10]张帅,张文皓,李宗芮.新式干灰化-湿法消解ICP-MS测定食品中的二氧化钛[J].食品研究与开发, 2013, 34(23):77-80.
[11]符传武,韦瑶瑶,洪薇. ICP-MS测定食品中的二氧化钛[J].中国酿造, 2014, 33(10):145-147.
[12]辛仁轩.等离子体原子发射光谱分析[M].北京:化学工业出版社, 2005:225-229.
[13]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.实验室质量管理控制规范食品理化检测:GB/T 27404—2008[S].北京:中国标准出版社, 2008.
[2]李英杰,白明.二氧化钛的特性及在食品中的应用[J].食品安全导刊, 2010(8):58-59.
[3]王京善,孙秀鸾,董国强.食品中二氧化钛测定方法的探讨[J].预防医学文献信息, 2001, 7(6):662-663.
[4]王红.糖果中新型着色剂二氧化钛检测方法的研究[J].中国卫生检验杂志, 2008, 18(9):1755-1756.
[5]薄晓菲,王洪伟,李佳,等.过氧化氢法测定魔芋凝胶食品中二氧化钛的研究[J].食品工业科技, 2010(3):357-359.
[6]中华人民共和国国家卫生和计划生育委员会.食品中二氧化钛的测定:GB 5009.246—2016[S].北京:中国标准出版社, 2016.
[7]彭青枝,潘思铁,李涛,等. ICP-AES测定面粉中二氧化钛[J].中国卫生检验杂志, 2008, 18(9):1768-1769.
[8]张磊,余永丽.电感耦合等离子体发射光谱法测定食品中二氧化钛含量[J].理化检验(化学分册), 2013, 49(11):1387-1388.
[9]郝大情,杨瑞春,李永利,等. ICP-AES测定食品中二氧化钛的方法研究[J].中国卫生检验杂志, 2013, 23(8):1849-1851.
[10]张帅,张文皓,李宗芮.新式干灰化-湿法消解ICP-MS测定食品中的二氧化钛[J].食品研究与开发, 2013, 34(23):77-80.
[11]符传武,韦瑶瑶,洪薇. ICP-MS测定食品中的二氧化钛[J].中国酿造, 2014, 33(10):145-147.
[12]辛仁轩.等离子体原子发射光谱分析[M].北京:化学工业出版社, 2005:225-229.
[13]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.实验室质量管理控制规范食品理化检测:GB/T 27404—2008[S].北京:中国标准出版社, 2008.