公开(公告)号：WO2016078759A1

公开(公告)日：2016-05-26

申请号：PCT/EP2015/002303

申请日：2015-11-18

Applicant: BASF SE

Inventor： KAUB, Hans-Peter ,  KELLER, Patrick ,  SUJANDI, ,  NIED, Stephan

IPC: G01N31/22

CPC classification number: G01N31/22

Abstract: The present invention relates to a method for the determination of a concentration (C) of a polyacrylic acid (PAA) in an aqueous medium (AM) wherein the determination is performed photometrically in the presence of a dye (I). The present invention furthermore, relates to a method for the determination of a concentration (C) of a polyacrylic acid (PAA) in an aqueous medium (AM) wherein at least two different transmittance values are measured using at least two different wavelengths and wherein the at least two different transmittance values are analyzed to determine the concentration (C) of the polyacrylic acid (PAA). The present invention also relates to the use of a dye (I) for the determination of the concentration (C) of a polyacrylic acid (PAA).

Abstract translation: 本发明涉及一种在水性介质（AM）中测定聚丙烯酸（PAA）的浓度（C）的方法，其中在染料（I）的存在下光度测定。 本发明还涉及一种用于测定水性介质（AM）中的聚丙烯酸（PAA）的浓度（C）的方法，其中使用至少两种不同的波长测量至少两种不同的透射率值，并且其中 分析至少两种不同透射率值以确定聚丙烯酸（PAA）的浓度（℃）。 本发明还涉及染料（I）用于测定聚丙烯酸（PAA）的浓度（C）的用途。