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本文报道了同时测定钴和镍的一种方法.在 0.01mol/L NH_3·H_2O-0.01mol/LNH_4Cl-3.0×10~(-5)mol/L安息香缩氨基硫脲(BTSC)溶液中,钴(Ⅱ)和镍(Ⅱ)均产生非常灵敏的还原波,其峰电位分别是:-0.94和-0.75V(vs.SCE),峰电流与钴和镍的浓度分别在2.0×10~(-8)~1.0×10~(-6)和1.0×10~(-8)~8.0×10~(-7)mol/L范围内成直线关系,该方法用于测定水中痕量钴和镍,相对标准偏差分别为1.4~2.0%和2.1~2.5%,回收率分别在98.0%~101.8%和97.9%~102.1%之间. 相似文献
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报道了测定痕量镍的一种新方法．在ＮＨ３·Ｈ２Ｏ－ＮＨ４Ｃｌ－安息香缩氨基硫脲体系中，镍产生一灵敏的还原波，该波的峰电位是－０．７５Ｖ（ｖｓ·ＳＣＥ），镍的浓度在１．０×１０－８～８．０×１０－７ｍｏｌ／Ｌ范围内与峰高成直线关系，检测限是３．０×１０－９ｍｏｌ／Ｌ，该法用于测定水中痕量镍，结果令人满意． 相似文献
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A novel side chain liquid crystalline polymer (SCLCP) combining the polysiloxane as main chain with azo-based mesogen moieties as side chain through a flexible spacer has been synthesized by the hydrosilylation reaction using Cp_2PtCl_2 as catalyst. The phase transition behavior of both side chain monomer (AZO-C_6C_(11))and polymer (P-AZO-C_6C_(11))has been characterized via combination of hot-stage polarized microscope, DSC and X-ray diffraction methods (including temperature-variation and quenching techniques). As normal, the transition process included K→S→N→I. Some pretransition features have been observed. 相似文献
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