ONLINE MICROWAVE SAMPLE PRETREATMENT FOR THE DETERMINATION OF MERCURY IN BLOOD BY FLOW-INJECTION COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRY
ONLINE MICROWAVE SAMPLE PRETREATMENT FOR THE DETERMINATION OF MERCURY IN BLOOD BY FLOW-INJECTION COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRY
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DOI：
10.1016/0039-9140(93)80117-a
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发表时间：
1993-12-01
期刊：
影响因子：
6.1
通讯作者：
BAASNER, J
中科院分区：
文献类型：
--
作者：
GUO, TZ;BAASNER, J
建立了全血在微波炉中在线处理，流动注射冷原子吸收光谱法测定汞的方法。在全血稀释和加入氧化剂后，所有进一步的处理和测量都是自动在线进行的。完成了五种汞化合物的回收。全血标准物质中汞的实测值与推荐值之间有良好的一致性。测得的水银值也与其他公认的方法的结果一致。样品吞吐量约为每小时45个测量值。稀释样品的检出限(3S)为0.1ug/L，相当于全血中1ug/L汞。稀释后的样品中汞的相对标准偏差为6-7%(11次测量，0.5毫升样品体积)。用该方法可测得1~150ug/L的全血汞浓度。三次重复测量需要0.5毫升全血。
A method for on-line treatment of whole blood in a microwave oven and determination of mercury by flow injection cold vapor atomic absorption spectrometry was developed. After dilution of the whole blood and addition of oxidant, all further treatment and measurement were performed automatically, on-line. Recoveries of five mercury compounds were complete. Good agreement between measured and recommended values of mercury in whole blood reference materials was obtained. Measured mercury values also agreed with results from other accepted methods. Sample throughput was about 45 measurements/hr. Detection limit (3s) in diluted sample was 0.1 mug/l corresponding to 1 mug/l Hg in whole blood. The RSD value at 0.5 mug/l Hg in the diluted sample was 6-7% (11 measurements and 0.5 ml sample volume). Mercury concentrations between 1 and 150 mug/l in whole blood can be measured using this method. For three replicate measurements, 0.5 ml of whole blood is required.