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包括王水、4NHNO_3、H_2O_2-抗坏血酸、草酸、KClO_3+HCl 和 KClO_3+HCl 再加上4NHNO_3的化学溶解法被用来处理分别与粘土质垆姆土混合的九个常见的硫化矿物样品(方铅矿、黄铜矿、辰砂、辉钼矿、雌黄、黄铁矿、辉锑矿、闪锌矿、黝铜矿)。用菜柯(Leco)感应炉所测定的混合物中总硫量的减少来评价每个化学方法的效力。用 KClO_3+HCl 再加上4 NHNO_3的混合溶液缓缓煮沸20分钟能有效地溶解所有各种硫化矿物。作为用其它化学提取法首先除去可溶性的、吸附型的及与有机物和次生氧化物结合的金属后分级提取的一步,此法已被推荐用来溶解残留在与次生风化产物混合的硫化矿物中的金属。
Chemical dissolution methods including aqua regia, 4NHNO_3, H_2O_2-ascorbic acid, oxalic acid, KClO_3 + HCl, and KClO_3 + HCl plus 4NHNO_3 were used to treat nine common sulfide mineral samples, respectively, mixed with clay soil Mine, chalcopyrite, cinnabar, molybdenite, orpiment, pyrite, stibnite, sphalerite, tetrahedrite). The effectiveness of each chemical method was evaluated using a reduction in total sulfur in the mixture as determined by a Leco induction furnace. Boiling gently for 20 minutes with a mixed solution of KClO 3 + HCl and 4 NHNO 3 can effectively dissolve all kinds of sulfide minerals. As a first step to remove the soluble, adsorbed, and metal-bound metals with other chemical extraction methods after the fractional extraction, this method has been proposed to dissolve sulfide minerals remaining in secondary weathering products In the metal.