公开(公告)号：US20190033222A1

公开(公告)日：2019-01-31

申请号：US16047229

申请日：2018-07-27

Applicant: Ecolab USA Inc.

Inventor： Hua Zheng ,  Xiaodong Huang ,  Tiandi Zhuang ,  Lan Xiao ,  Patrick G. Murray ,  Philip M. Eastin

IPC: G01N21/84 ,  G01N1/28 ,  G01N21/31 ,  C02F1/52 ,  C02F1/38 ,  C02F1/44 ,  B01D17/02 ,  B01D15/08 ,  C02F1/54

Abstract: A method of detecting free flocculant polymer having a net charge present in an aqueous phase of a multi-phase substance is provided. The multi-phase substance comprises a solid phase, an organic phase, and the aqueous phase. The method comprises separating the solid phase from the multi-phase substance to form a dual phase top liquid comprising the organic phase and the aqueous phase; separating the organic phase from the dual phase top liquid, leaving the aqueous phase; combining the free flocculant polymer in the aqueous phase and a dye having an opposite net charge than that of the free flocculant polymer, thereby causing a spectroscopically observable change in the aqueous phase; and analyzing the aqueous phase via spectrometry to determine the concentration of the free flocculant polymer in the multi-phase substance.

公开(公告)号：US10782241B2

公开(公告)日：2020-09-22

申请号：US16047229

申请日：2018-07-27

Applicant: Ecolab USA Inc.

Inventor： Hua Zheng ,  Xiaodong Huang ,  Tiandi Zhuang ,  Lan Xiao ,  Patrick G. Murray ,  Philip M. Eastin

IPC: G01N21/84 ,  G01N1/28 ,  G01N21/31 ,  C02F1/52 ,  B01D15/08 ,  B01D17/02 ,  G01N15/06 ,  B01D17/00 ,  C02F1/38 ,  C02F1/44 ,  C02F103/32 ,  C02F1/54 ,  C02F1/24 ,  G01N1/40 ,  G01N21/78 ,  G01N15/00

Abstract: A method of detecting free flocculant polymer having a net charge present in an aqueous phase of a multi-phase substance is provided. The multi-phase substance comprises a solid phase, an organic phase, and the aqueous phase. The method comprises separating the solid phase from the multi-phase substance to form a dual phase top liquid comprising the organic phase and the aqueous phase; separating the organic phase from the dual phase top liquid, leaving the aqueous phase; combining the free flocculant polymer in the aqueous phase and a dye having an opposite net charge than that of the free flocculant polymer, thereby causing a spectroscopically observable change in the aqueous phase; and analyzing the aqueous phase via spectrometry to determine the concentration of the free flocculant polymer in the multi-phase substance.