【摘要】 本文研究了新显色剂间溴偶氮羧与钡显色反应的最佳条件.在2,2’-联吡啶存在下,pH2.0混酸-NaOH介质中,Ba（Ⅱ）与显色剂迅速反应,形成稳定的1:2络合物.λ_max=710nm,ε₇₁₀=1.5×10⁵L·mol^-1·cm^-1,0～15μBa/25ml符合比尔定律,为已报导钡最灵敏的显色反应之一.更多还原

【Abstract】 This paper reports the colour reaction of borium with mobrono arboxysalfoaizo, The optimum condition is obtained in mixed aeid-sodium hydroxide ( pHl.3-2.6 )and 2, 2’-bipyridyl system.The molar absorptivity is 1.5×105L.mol-1.c.n-1 at 710nm, Beer’s law is obeyed ia the raige of 0-15 ug/25ml for bariu-n, the coaipo’sitioa of the complex is 1: 2.更多还原