化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
5期
48-50
,共3页
微波消解%电感耦合等离子体质谱仪%话梅%二氧化钛
微波消解%電感耦閤等離子體質譜儀%話梅%二氧化鈦
미파소해%전감우합등리자체질보의%화매%이양화태
microwave digestion%inductively coupled plasma mass spectrometry%preserved plum%titanium dioxide
建立了微波消解-电感耦合等离子体质谱仪（ICP-MS）测定话梅中二氧化钛的方法。话梅样品用硝酸及过氧化氢经微波消解仪消解，将消解液除酸定容后用电感耦合等离子体质谱仪测定，以内标法测得钛的含量，并转换成样品中的二氧化钛含量。钛含量在0～500μg／kg范围内与信号强度呈良好的线性，线性相关系数r=0.9999，检出限为0.04μg／kg。在0.06，0.15，0.30μg／kg的添加水平下，加标回收率为80%～100%，相对标准偏差为3.2%～3.9%(n=6)。该法稳定性好，测定结果准确、可靠。
建立瞭微波消解-電感耦閤等離子體質譜儀（ICP-MS）測定話梅中二氧化鈦的方法。話梅樣品用硝痠及過氧化氫經微波消解儀消解，將消解液除痠定容後用電感耦閤等離子體質譜儀測定，以內標法測得鈦的含量，併轉換成樣品中的二氧化鈦含量。鈦含量在0～500μg／kg範圍內與信號彊度呈良好的線性，線性相關繫數r=0.9999，檢齣限為0.04μg／kg。在0.06，0.15，0.30μg／kg的添加水平下，加標迴收率為80%～100%，相對標準偏差為3.2%～3.9%(n=6)。該法穩定性好，測定結果準確、可靠。
건립료미파소해-전감우합등리자체질보의（ICP-MS）측정화매중이양화태적방법。화매양품용초산급과양화경경미파소해의소해，장소해액제산정용후용전감우합등리자체질보의측정，이내표법측득태적함량，병전환성양품중적이양화태함량。태함량재0～500μg／kg범위내여신호강도정량호적선성，선성상관계수r=0.9999，검출한위0.04μg／kg。재0.06，0.15，0.30μg／kg적첨가수평하，가표회수솔위80%～100%，상대표준편차위3.2%～3.9%(n=6)。해법은정성호，측정결과준학、가고。
A method for the determination of titanium dioxide in preserved plum by microwave digestion-inductively coupled plasma mass spectrometry (ICP-MS) was established. Digestion of preserved plum with HNO3 and H2O2 was carried out in microwave digestion instrument. After acid being removed, the digestion solution was diluted to an constant volume and detected by inductively coupled plasma mass spectrometry(ICP-MS), quantified with internal standard, and then the content of titanium was gotten. The content of titanium dioxide could be calculated by the content of titanium. The detection limit of titanium dioxide was 0.04 μg/kg. The content of Ti was linear with signal strength in the range of 0-500 μg/kg, the correlation coefficient was 0.999 9. The recoveries of itanium dioxide in preserved plum ranged from 80%to 100%, as the spiked levels were 0.06,0.15 and 0.30μg/kg. The relative standard deviation was 3.2%-3.9%(n=6). The mothod is reliable, accurate and stable.
