A micellar mediated novel method for the determination of selenium in environmental samples using a chromogenic reagent

2020 ◽  
Vol 12 (35) ◽  
pp. 4327-4333
Author(s):  
Garima Pravin Pandey ◽  
Ajaya K. Singh ◽  
Lata Deshmukh ◽  
Anupama Asthana ◽  
Masafumi Yoshida ◽  
...  
Keyword(s):  
Spectrophotometric Method ◽  
Rhodamine B ◽  
Environmental Samples ◽  
Acidic Medium ◽  
Chromogenic Reagent ◽  
Novel Method ◽  
Rhodamine B Hydrazide

A novel, simple, sensitive and rapid spectrophotometric method for the determination of selenium(iv) in an acidic medium using rhodamine B hydrazide (RBH) has been developed.

Indirect Determination of Acetylcysteine in Pharmaceutical Sample by Discoloration Spectrophotometry Using Fe(III)-Tiron System

2015 ◽  
Vol 713-715 ◽  
pp. 2710-2713
Author(s):  
Chang Qing Tu ◽  
Xin Rong Wen
Keyword(s):  
Spectrophotometric Method ◽  
Indirect Determination ◽  
Chromogenic Reagent ◽  
Pharmaceutical Sample

Fe (Ш) can be reduced to Fe (II) by hydrosulfuryl (-SH) in acetylcysteine molecule,and then using tiron as chromogenic reagent of Fe (Ш),and the content of acetylcysteine is determinated indirectly through determinating the surplus content of Fe (Ш) in the system.An accurate fast spectrophotometric method for the determination of acetylcysteine by discoloration spectrophotometry using Fe (Ш)-tiron system has been established.This proposed method had been successfully applied to determinate of acetylcysteine in real pharmaceutical.

A new optical sensor for spectrophotometric determination of uranium (VI) and thorium (IV) in acidic medium

2017 ◽  
Vol 105 (12) ◽  
Author(s):  
O. A. Elhefnawy
Keyword(s):  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Optical Sensor ◽  
Acidic Medium ◽  
Complexation Reaction

AbstractA spectrophotometric method was developed for U(VI) and Th(IV) determination in acidic medium by using proposed optical sensor. This sensor is base on the complexation reaction of the ionophore midodrine hydrochloride (

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