Abstract

The anion-exchange extraction of thiocyanate ions by various quaternary ammonium salts was studied. Exchange constants of thiocyanate ions for the chloride ion \(\left( {\log K_{{{\text{C}}{{{\text{l}}}^{ - }}}}^{{{\text{SC}}{{{\text{N}}}^{ - }}}}} \right)\) were determined. Thus, in the transition from 3,4,5-tris(dodecyloxy)benzyltrimethylammonium bromide to 3,4,5-tris(dodecyloxy)benzyltrilaurylammonium bromide \(\log K_{{{\text{C}}{{{\text{l}}}^{ - }}}}^{{{\text{SC}}{{{\text{N}}}^{ - }}}}\) increases almost tenfold. A film (PVC) thiocyanate-selective electrode was developed (plasticizer 1-bromonaphthalene) on the basis of the trilauryl quaternary ammonium salt. Its main analytical characteristics were determined (slope of electrode function, limit of detection, selectivity coefficients, working pH range). The electrode was used for the determination thiocyanate ions in saliva of smoking and non-smoking people.

中文翻译：

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硫氰酸盐选择电极及其分析应用

摘要

研究了各种季铵盐对阴离子交换硫氰酸根离子的萃取作用。硫氰酸根离子与氯离子的交换常数\（\ left（{\ log K _ {{{\ text {C}} {{{\ text {l}}} ^ {-}}}}} ^ {{{\ text确定{SC}} {{{\ text {N}}} ^ {-}}}}} \ right）\）。因此，在从3,4,5-三（十二烷氧基）苄基三甲基溴化铵过渡到3,4,5-三（十二烷氧基）苄基三月桂溴化铵\（\ log K _ {{{\ text {C}}} {{{\ text {l}}} ^ {-}}}} ^ {{{\ text {SC}}} {{{\ text {N}}} ^ {-}}}} \）增加几乎十倍。在三月桂基季铵盐的基础上开发了膜状（PVC）硫氰酸盐选择性电极（增塑剂1-溴萘）。确定了其主要分析特性（电极功能的斜率，检测限，选择性系数，工作pH范围）。该电极用于测定吸烟者和非吸烟者唾液中的硫氰酸根离子。