scholarly journals Protocol Griess Test v1 (protocols.io.96ph9dn)

protocols.io ◽  
2019 ◽  
Author(s):  
Tamiris Silva ◽  
Carolina de ◽  
Sandra Kalil ◽  
Kaline de ◽  
Kristianne Porta
Keyword(s):  
Griess Test

scholarly journals Griess-Test

2017 ◽  
pp. 1-1
Author(s):  
A. M. Gressner ◽  
O. A. Gressner
Keyword(s):  
Griess Test

Diagnostic Accuracy of Griess Test for Asymptomatic Bacteriuria in Pregnancy

2016 ◽  
Vol 11 (8) ◽  
pp. 1-7 ◽  
Author(s):  
R Manjula ◽  
H Kavya ◽  
S Kashinakunti ◽  
Shivakumar Solabannavar ◽  
A Dorle ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Asymptomatic Bacteriuria ◽  
Griess Test ◽  
In Pregnancy

Further evaluation of the Griess test to detect significant bacteriuria

1971 ◽  
Vol 110 (5) ◽  
pp. 677-681 ◽  
Author(s):  
Anthony W. Czerwinski ◽  
Ronald G. Wilkerson ◽  
James A. Merrill ◽  
Barbara Braden ◽  
John P. Colmore
Keyword(s):  
Significant Bacteriuria ◽  
Griess Test

Determination of Temik Residues in Raw Fruits and Vegetables

1966 ◽  
Vol 49 (2) ◽  
pp. 399-403
Author(s):  
D P Johnson ◽  
H A Stansbury
Keyword(s):  
Topical Application ◽  
Nitrous Acid ◽  
Fruits And Vegetables ◽  
Treated Soil ◽  
Average Recovery ◽  
Systemic Pesticide ◽  
Acid Catalyzed ◽  
Griess Test

Abstract Temik, 2-methyl-2-(methylthio) propionaldehyde O-(methylcarbamoyl)oxime, is a systemic pesticide effective both by topical application to the plant and by systemic translocation from treated soil. The method developed for residues of Temik in crops is based on extraction of the crops with chloroform, followed by cleanup involving both coagulation and liquid partitioning techniques. The analysis involves both base- and acid-catalyzed hydrolysis to liberate hydroxylamine, which is then oxidized by iodine to nitrous acid; the latter is determined by diazotization (a modification of the Griess test for nitrites). The method is sensitive to about 0.03 ppm; average recovery from 8 crops is 96.3 ± 3.2%. Other current commercial pesticides do not interfere in the analysis.

scholarly journals Preliminary Evaluation of Gunshot Residue (GSR) Using 3-Aminophenol as a Substitute in Modified Griess Test

2021 ◽  
Vol 21 (6) ◽  
pp. 1550
Author(s):  
Siti Nurhazlin Jaluddin ◽  
Zainiharyati Mohd Zain ◽  
Mohamed Izzharif Abdul Halim ◽  
Muhd Fauzi Safian ◽  
Mohd Azri Abdul Rani ◽  
...  
Keyword(s):  
Colorimetric Method ◽  
Sulfanilic Acid ◽  
Gunshot Residue ◽  
Rapid Screening ◽  
Screening Methods ◽  
Preliminary Evaluation ◽  
Fast Analysis ◽  
Color Changes ◽  
Rapid Screening Test ◽  
Griess Test

In forensic ballistics, gunshot residue (GSR) particles can be detected using screening or presumptive tests which are mainly focused on the chromophoric reaction. Most tests serve as an initial indication for a forensic investigator at the crime scene before instrumental analysis for definitive identification. The screening methods are known to be convenient, have fast analysis, and minimal preparation. In GSR analysis, the well-known method of detecting GSR known as the Modified Griess Test (MGT) requires acid and heat for the reaction. Therefore, this study demonstrated a new and rapid screening test named the Rapid Griess Test (RGT) for the detection of GSR. This study intends to improve the functionality of previous screening reagents in determining nitrite (NO2–), the composition present after shooting activity. To do this, chemical reagents with an amino group, 3-aminophenol, were substituted with alpha-naphthol. The experiment showed that the reactions were positive color changes using standard NO2– and real GSR samples. The diazotization reactions involving sulfanilic acid and 3-aminophenol produced azo dyes that changed the solution from colorless to orange in the presence of NO2–. The RGT reagent will make it possible to avoid using heat and the addition of acetic acids in a sample to form chromophoric reactions. Moreover, the colorimetric method using Video Spectral Comparator (VSC) showed that RGT had higher intensity of the orange color when compared to MGT.

scholarly journals Griess-Test

2019 ◽  
pp. 1029-1029
Author(s):  
A. M. Gressner ◽  
O. A. Gressner
Keyword(s):  
Griess Test

The Griess Test: An Inexpensive Screening Test for Asymptomatic Bacteriuria in Pregnancy

1998 ◽  
Vol 38 (4) ◽  
pp. 407-410 ◽  
Author(s):  
Jiji E. Mathews ◽  
Susan George ◽  
Prasad Mathews ◽  
Elizabeth Mathai ◽  
K. N. Brahmadathan ◽  
...  
Keyword(s):  
Screening Test ◽  
Asymptomatic Bacteriuria ◽  
Griess Test ◽  
In Pregnancy

A novel strategy for colorimetric detection of hydroxyl radicals based on a modified Griess test

Talanta ◽  
2019 ◽  
Vol 195 ◽  
pp. 152-157 ◽  
Author(s):  
Tao Deng ◽  
Shiyou Hu ◽  
Xin-an Huang ◽  
Jianping Song ◽  
Qin Xu ◽  
...  
Keyword(s):  
Hydroxyl Radicals ◽  
Colorimetric Detection ◽  
Griess Test ◽  
Novel Strategy
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