[Updated on Apr. 18] Integration of CiNii Articles into CiNii Research

DIRECT COLORIMETRIC AND DIRECT TITRIMETRIC DETERMINATION OF CALCIUM WITH NEW REAGENT (SUPPLEMENTARY REPORT)

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  • 新しい試薬によるカルシウムの直接比色定量法及び直接摘定法-続報-
  • アタラシイ シヤク ニ ヨル カルシウム ノ チョクセツ ヒショク テイリョウホウ オヨビ チョクセツテキジョウホウ ゾクホウ

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Abstract

The author improved the accuracy of the direct colori metric method of calcium determination with azocal-A using an electrophotometer and made an investigation of interfering ions concerning this method. With this improved method calcium content of 0.2-several mgs per liter can be determined using only 5cc. of river water sample with an error of 土10%. Only 2 minutes are enough for a single determination and this method surpassed the ordinary oxalate method in accuracy.

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