Rapid determination of hydrogen peroxide in the wood pulp bleaching streams by a dual-wavelength spectroscopic method

2004 ◽  
Vol 507 (2) ◽  
pp. 281-284 ◽  
Author(s):  
X.-S Chai ◽  
Q.X Hou ◽  
Q Luo ◽  
J.Y Zhu
Keyword(s):  
Hydrogen Peroxide ◽  
Rapid Determination ◽  
Spectroscopic Method ◽  
Wood Pulp ◽  
Dual Wavelength ◽  
Pulp Bleaching

scholarly journals Simple and efficient dual-wavelength spectroscopy for the determination of organic matter in sewage sludge from wastewater treatment

RSC Advances ◽  
2019 ◽  
Vol 9 (22) ◽  
pp. 12580-12584
Author(s):  
Xiaojie Tu ◽  
Zhanbo Hu ◽  
Xin-Sheng Chai ◽  
Yuting Su
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Rapid Determination ◽  
Spectroscopic Method ◽  
Dual Wavelength

In this study, a dual-wavelength spectroscopic method for rapid determination of organic matter in sludge was developed.

Rapid determination of the hypoxanthine increase in ischemic exercise tests.

1988 ◽  
Vol 34 (8) ◽  
pp. 1607-1610 ◽  
Author(s):  
P A Bolhuis ◽  
R Zwart ◽  
P R Bär ◽  
M de Visser ◽  
H J van der Helm
Keyword(s):  
Hydrogen Peroxide ◽  
Detection Limit ◽  
Rapid Determination ◽  
Serum Lactate ◽  
Benzenesulfonic Acid ◽  
Exercise Tests ◽  
Ph Optimum ◽  
Absorbance Maximum ◽  
Myoadenylate Deaminase

Abstract After ischemic exercise tests, performed to detect glycogenoses or myoadenylate deaminase (EC 3.5.4.6) deficiency, the increases in serum lactate and ammonia usually are measured. Determination of hypoxanthine instead of ammonia can also be used to show myoadenylate deaminase deficiency, but HPLC of hypoxanthine is time-consuming. As a substitute, we developed an indirect enzymatic equilibrium method for hypoxanthine based on coupling the chromogenic system 3,5-dichloro-2-hydroxy-benzenesulfonic acid/4-aminophenazone with formation of hydrogen peroxide by xanthine oxidase (EC 1.1.3.22). The pH optimum is at 7.8 and the absorbance maximum at 510 nm. The calibration curve is linear from 0 to 100 mumol/L and the detection limit is 0.9 mumol/L. Analytical variability (CV) was 1.5% to 3.6% within-run, 4.5% to 8.5% between-run. The assay can be performed with a standard spectrophotometer or a centrifugal analyzer. The coefficient of correlation was 0.68 between hypoxanthine and ammonia increases in plasma from controls who performed the exercise test.

A new route for simple and rapid determination of hydrogen peroxide in RAW264.7 macrophages by microchip electrophoresis

2009 ◽  
Vol 30 (11) ◽  
pp. 1983-1990 ◽  
Author(s):  
Xiaocong Gong ◽  
Qingling Li ◽  
Kehua Xu ◽  
Xin Liu ◽  
Hongmin Li ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Rapid Determination ◽  
Microchip Electrophoresis ◽  
Raw264.7 Macrophages

scholarly journals Simple and Rapid Determination of Hydrogen Peroxide Using Phosphine-based Fluorescent Reagents with Sodium Tungstate Dihydrate

2006 ◽  
Vol 22 (6) ◽  
pp. 815-817 ◽  
Author(s):  
Maki ONODA ◽  
Takefumi UCHIYAMA ◽  
Ken-ichi MAWATARI ◽  
Kiyoko KANEKO ◽  
Kazuya NAKAGOMI
Keyword(s):  
Hydrogen Peroxide ◽  
Sodium Tungstate ◽  
Rapid Determination

Regulatory Infrared Spectroscopic Method for the Rapid Determination of Total Isolated Trans Fat: A Collaborative Study

2010 ◽  
Vol 88 (1) ◽  
pp. 39-46 ◽  
Author(s):  
M. M. Mossoba ◽  
A. Seiler ◽  
H. Steinhart ◽  
J. K. G. Kramer ◽  
L. Rodrigues-Saona ◽  
...  
Keyword(s):  
Rapid Determination ◽  
Spectroscopic Method ◽  
Collaborative Study ◽  
Trans Fat ◽  
Infrared Spectroscopic

scholarly journals Raman Spectral Analysis for Quality Determination of Grignard Reagent

2020 ◽  
Vol 10 (10) ◽  
pp. 3545
Author(s):  
Rahul Joshi ◽  
Ritu Joshi ◽  
Changyeun Mo ◽  
Mohammad Akbar Faqeerzada ◽  
Hanim Z. Amanah ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Grignard Reagent ◽  
Rapid Determination ◽  
Spectroscopic Method ◽  
Spectroscopic Technique ◽  
Partial Least Square ◽  
Least Square ◽  
Partial Least Square Regression ◽  
Toluene Concentration

Grignard reagent is one of the most popular materials in chemical and pharmaceutical reaction processes, and requires high quality with minimal adulteration. In this study, Raman spectroscopic technique was investigated for the rapid determination of toluene content, which is one of the common adulterants in Grignard reagent. Raman spectroscopy is the most suitable spectroscopic method to mitigate moisture and CO2 interference in the molecules of Grignard reagent. Raman spectra for the mixtures of toluene and Grignard reagent with different concentrations were analyzed with a partial least square regression (PLSR) method. The combination of spectral wavebands in the prediction model was optimized with a variables selection method of variable importance in projection (VIP). The results obtained from the VIP-based PLSR model showed the reliable performance of Raman spectroscopy for predicting the toluene concentration present in Grignard reagent with a correlation coefficient value of 0.97 and a standard error of prediction (SEP) of 0.71%. The results showed that Raman spectroscopy combined with multivariate analysis could be an effective analytical tool for rapid determination of the quality of Grignard reagent.

Sign in / Sign up

Export Citation Format

Share Document