Infrared, Ultraviolet, and Visible Spectrophotometric Determination of Imidan in Animal Dips and Sprays

1969 ◽  
Vol 52 (5) ◽  
pp. 1017-1026
Author(s):  
Fred P Czech ◽  
Marvin D Mack ◽  
George Evans
Keyword(s):  
Spectrophotometric Determination ◽  
Rapid Analysis ◽  
The Other ◽  
Spectral Energy ◽  
Wettable Powder ◽  
Low Levels ◽  
Colorimetric Methods

Abstract Procedures utilizing certain regions of spectral energy for the analysis of Imidan in emulsifiable and wettable powder concentrates, aqueous livestock dips, spray dips, and sprays are presented and compared. The UV method is recommended for rapid analysis of proprietary concentrates. IR and colorimetric methods are advised for filth-laden animal dips and sprays. The IR method can be genrerally applied, is entirely specific for Imidan, and is quite precise. The other procedures are particularly useful for determination of low levels of Imidan.

Infrared, Ultraviolet, and Visible Spectrophotometric Determination of Imidan in Animal Dips and Sprays

1969 ◽  
Vol 52 (5) ◽  
pp. 1017-1026
Author(s):  
Fred P Czech ◽  
Marvin D Mack ◽  
George Evans
Keyword(s):  
Spectrophotometric Determination ◽  
Rapid Analysis ◽  
The Other ◽  
Spectral Energy ◽  
Wettable Powder ◽  
Low Levels ◽  
Colorimetric Methods

Abstract Procedures utilizing certain regions of spectral energy for the analysis of Imidan in emulsifiable and wettable powder concentrates, aqueous livestock dips, spray dips, and sprays are presented and compared. The UV method is recommended for rapid analysis of proprietary concentrates. Ill and colorimetric methods are advised for filth-laden animal dips and sprays. The IR method can be gen-r erally applied, is entirely specific for Imidan, and is quite precise. The other procedures are particularly useful for determination of low levels of Imidan.

Spectrophotometric Determination of Raceophenidol in Feed at Very Low Levels

1968 ◽  
Vol 51 (4) ◽  
pp. 752-755
Author(s):  
Edward L Pratt ◽  
Morris E Auerbach
Keyword(s):  
Spectrophotometric Determination ◽  
Growth Promotion ◽  
Ultraviolet Spectrum ◽  
Average Value ◽  
Collaborative Studies ◽  
Low Levels ◽  
Concentration Levels

Abstract Raceophenidol in feed at concentration levels intended for growth promotion of poultry can be estimated by a curvature inversion measurement related to the ultraviolet spectrum of derived p-methylsulfonylbenzaldehyde. The drug can be accurately measured at the 0.0005% level. Collaborative studies on the method showed an average value of 94 ± 10% of claim. The method is recommended for adoption as official, first action.

Spectrophotometric Determination of Phosphine Residues in Rice

1985 ◽  
Vol 68 (2) ◽  
pp. 205-208 ◽  
Author(s):  
Jois R Rangaswamy ◽  
Mysore Muthu
Keyword(s):  
Spectrophotometric Determination ◽  
Closed System ◽  
The Other ◽  
Parboiled Rice ◽  
Polished Rice ◽  
Rice Samples ◽  
Phosphine Residues

Abstract Phosphine residues were determined in 2 types of rice samples, raw polished and parboiled. The yellow chromophore due to phosphine from raw polished rice had 2 absorption maxima, a strong one at 370- 380 nm and a weaker one at 400-410 nm. The chromophore from parboiled rice also had 2, one at 390-400 nm and the other at 410-420 nm. A closed system containing rice and a phosphine tablet or powder yielded 93-99% recovery of fortified phosphine. At any given dose of phosphine, parboiled rice retained a higher amount of residue after aeration than did raw polished rice.

Application of some colorimetric methods for the spectrophotometric determination of phenylbutazone and oxyphenbutazone

Talanta ◽  
1985 ◽  
Vol 32 (8) ◽  
pp. 657-658 ◽  
Author(s):  
A.S. Issa ◽  
Y.A. Beltagy ◽  
M.Gabr Kassem ◽  
H.S. Daabees
Keyword(s):  
Spectrophotometric Determination ◽  
Colorimetric Methods

Collaborative Study of Spectrophotometric Determination of Hexachlorocyclopentadiene in Technical Chlordane

1966 ◽  
Vol 49 (2) ◽  
pp. 254-257
Author(s):  
Marshall Malina
Keyword(s):  
Spectrophotometric Determination ◽  
Collaborative Study ◽  
Quantitative Measure ◽  
Ultraviolet Absorption ◽  
The Other ◽  
Positive Bias ◽  
Alternative Procedures ◽  
Small Absorption

Abstract Hexachlorocyclopentadiene exhibits strong ultraviolet absorption at 324 mμ, while technical chlordane exhibits only small absorption at this wavelength. The intensity of this absorption is a quantitative measure of the hexachlorocyclopentadiene content. Eight laboratories cooperated in a collaborative study of two alternative procedures on six samples. Results show that one procedure exhibits a positive bias and that the other procedure does not. The precision of both procedures is excellent. The methods are recommended for adoption as official, first action.

Catalytic spectrophotometric determination of trace Mo(vi) in milk-based beverages in the presence of bromophenol blue and H2O2 using SDS as a sensitizer

2016 ◽  
Vol 8 (33) ◽  
pp. 6284-6292
Author(s):  
Nuket Kartal Temel ◽  
Ramazan Gürkan
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Low Cost ◽  
Sodium Dodecyl ◽  
Bromophenol Blue ◽  
Dodecyl Sulfate ◽  
Low Levels

A simple and low-cost catalytic spectrophotometric method using sodium dodecyl sulfate (SDS) as a sensitivity-improving surfactant to detect low levels of Mo(vi) in beverage matrices was developed.

Sign in / Sign up

Export Citation Format

Share Document