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微扩散分离技术早有报导,但我们尚未见以氯化氢形式分离测定氯的报导。本文拟定了以硫酸为扩散剂,在特定的温度下使氯以氯化氢形式分离逸出,与绝大多数干扰元素分离,以硫氰酸汞比色法测定岩石矿物中氯的方法。检测下限为50ppb。取样量为0.2～50mg时,可测定10～0.002％氯。实验部分 1.器皿及试剂: 扩散皿:具有磨口盖的玻璃称量瓶(内径ф=37mm,h=25mm),在其顶盖内壁用600号碳化硅粉磨毛一圆斑(ф=27mm)作为吸收面。氯标准溶液:以氯化钠配成100μgCl-/ml溶液。
Micro diffusion technology has long been reported, but we have not seen any reports on the separation and determination of chlorine in the form of hydrogen chloride. In this paper, a method for the determination of chlorine in rock minerals using sulfuric acid as diffusing agent, separating and releasing chlorine in the form of hydrogen chloride at a specific temperature and separating from most interfering elements by mercuric thiocyanate colorimetry has been drawn up. Detection limit of 50ppb. Sampling capacity of 0.2 ~ 50mg, measurable 10 ~ 0.002% chlorine. Experimental part 1. Utensils and reagents: Diffuser: glass weighing bottle with grinding mouth cover (inner diameter ф = 37mm, h = 25mm), the inner wall of the top cover with a 600 # silicon carbide grinding hair a circular spot (ф = 27mm) as the absorption surface. Chlorine standard solution: sodium chloride dubbed 100μgCl- / ml solution.