%0 Journal Article %T Colorimetric filtrations of metal chelate precipitations for the quantitative determination of nickel(ii) and lead(ii) %A Feng, Liang %A Zhang, Yue %A Wen, Liying %A Chen, Liang %A Shen, Zheng %A Guan, Yafeng %J The Analyst %V 136 %N 20 %P 4197-4203 %@ 0003-2654 %D 2011-09-26 %I The Royal Society of Chemistry %~ DeepDyve