Capar S G, Gould J H
J Assoc Off Anal Chem. 1979 Sep;62(5):1054-61.
The Pb, Cd, F, Al, Cr, Cu, Fe, Mn, Mo, Ni, Ti, and Zn content of 20 commercial bonemeal supplements was determined. Samples were mineralized with nitric and perchloric acids prior to determination of all elements except F, for which a diffusion method was used. Pb and Cd were determined by differential pulse anodic stripping voltammetry, F was measured using an ion selective electrode, and all other elements were determined by inductively coupled argon plasma spectroscopy. The mean recoveries of Pb and F were 97 and 99%, respectively. The concentration range of Pb was 1.5-8.7 microgram/g. Cd was quantitated in only one sample at a level of 2.5 microgram/g; all other samples were estimated to contain less than 0.05 microgram Cd/g. The concentration of F ranged from 261 to 921 microgram/g.
测定了20种市售骨粉补充剂中的铅、镉、氟、铝、铬、铜、铁、锰、钼、镍、钛和锌含量。除氟外，在测定所有元素之前，样品先用硝酸和高氯酸进行矿化处理，氟采用扩散法测定。铅和镉采用差分脉冲阳极溶出伏安法测定，氟采用离子选择性电极测量，所有其他元素采用电感耦合氩等离子体光谱法测定。铅和氟的平均回收率分别为97%和99%。铅的浓度范围为1.5 - 8.7微克/克。仅在一个样品中检测到镉，含量为2.5微克/克；估计所有其他样品中的镉含量低于0.05微克/克。氟的浓度范围为261至921微克/克。
