【摘要】 本文把析相法应用于Fe（Ⅱ）-4,7-二苯基-1,10-菲啰啉-Triton X-100体系测定天然水中痕量铁。在pH3.8,90℃,水浴加热70分钟,析相完全。λ_max=532nm。在含铁量0—40μg/L范围内工作曲线为直线。水中常见离子除Cu²⁺以外均无干扰。用于测天然水中痕量铁得到满意的结果。更多还原

【Abstract】 A phase-separation method is przsented for determination of trace iron in natural water using the system of Fe(Ⅰ)-4, 7-diphenyl-1, 10-phenanthroline-Triton X-100. The systzm must be conducted in HAc-NaAC buffer solution of pH 3. 8 to complete phase-separa- tion. Heating takes 70 min at 90℃ on a water bath. The calibration curve at 532 nm is linear for the concentration range of 0—40μg/L. The forzign ions in natural water do notinterfere except copper. The present method has been applied to determine trace iron in watr with satisfactorv results.更多还原