Construction of a photoelectric colorimeter and application to students' experiments (Part 2)

1989 ◽  
Vol 66 (10) ◽  
pp. 848 ◽  
Author(s):  
Tsutomu Matsuo ◽  
Akihiko Muromatsu ◽  
Kazuko Katayama ◽  
Minako Mori
Keyword(s):  
Photoelectric Colorimeter

DETERMINATION OF NITRATE-NITROGEN WITH A PHOTOELECTRIC COLORIMETER

Soil Science ◽  
1941 ◽  
Vol 52 (3) ◽  
pp. 185-192 ◽  
Author(s):  
T. O. BERGE
Keyword(s):  
Nitrate Nitrogen ◽  
Photoelectric Colorimeter

scholarly journals OXIDATION METHOD FOR BILIRUBIN DETERMINATIONS IN BILE AND MECONIUM WITH THE PHOTOELECTRIC COLORIMETER

1938 ◽  
Vol 122 (3) ◽  
pp. 597-603
Author(s):  
Helga Tait Malloy ◽  
Kenneth A. Evelyn
Keyword(s):  
Oxidation Method ◽  
Photoelectric Colorimeter

A Four-Filter Photoelectric Colorimeter

1939 ◽  
Vol 29 (10) ◽  
pp. 448 ◽  
Author(s):  
B. T. Barnes
Keyword(s):  
Photoelectric Colorimeter

Modification of Folin’s Uric Acid Method Using a Photoelectric Colorimeter*

1952 ◽  
Vol 22 (1_ts) ◽  
pp. 72-76 ◽  
Author(s):  
Opal E. Hepler ◽  
Mary M. Stoskopf
Keyword(s):  
Uric Acid ◽  
Acid Method ◽  
Photoelectric Colorimeter

A PHOTOELECTRIC COLORIMETER-FLUORIMETER

1940 ◽  
Vol 18b (8) ◽  
pp. 240-245 ◽  
Author(s):  
D. K. Froman ◽  
W. D. McFarlane
Keyword(s):  
Fluorescence Measurements ◽  
Photoelectric Colorimeter

A photoelectric colorimeter of the compensating two-photocell type is described. It is simple in design, relatively inexpensive to construct, and satisfactory in performance. By changing the lamp and filters it can be adapted to fluorescence measurements.

A PHOTOELECTRIC COLORIMETER

Science ◽  
1938 ◽  
Vol 88 (2276) ◽  
pp. 153-154
Author(s):  
K. Hare ◽  
R. E. Phipps
Keyword(s):  
Photoelectric Colorimeter

A Photoelectric Colorimeter with Logarithmic Response*

1935 ◽  
Vol 25 (10) ◽  
pp. 342 ◽  
Author(s):  
Ralph H. Müller ◽  
Gilbert F. Kinney
Keyword(s):  
Photoelectric Colorimeter

Wide-Range Chromaticity Measurements with Photoelectric Colorimeter

1954 ◽  
Vol 42 (1) ◽  
pp. 156-160
Author(s):  
John Chatten
Keyword(s):  
Wide Range ◽  
Photoelectric Colorimeter ◽  
Chromaticity Measurements

AN IMPROVED METHOD FOR THE DETERMINATION OF PHOSPHATE BY PHOTOELECTRIC COLORIMETRY

1938 ◽  
Vol 16b (3) ◽  
pp. 97-108 ◽  
Author(s):  
W. J. Dyer ◽  
C. L. Wrenshall
Keyword(s):  
Organic Matter ◽  
Accurate Method ◽  
Improved Method ◽  
Color Intensity ◽  
Soil Extracts ◽  
Color Development ◽  
Light Filters ◽  
Photoelectric Colorimeter ◽  
Made In

A sensitive and accurate method for the determination of phosphate, involving the application of the Evelyn photoelectric colorimeter to the ceruleomolybdate reaction, is described. This technique makes it possible to differentiate phosphate phosphorus from other forms of phosphorus.Conditions affecting the rate and extent of color development have been studied. The results show that the maximum color intensity is developed m about five minutes after addition of the reducing agent. The determination may be made in the presence of extraneous color, and soil organic matter does not interfere with the reaction. Under the conditions specified, using light filters, Beer's law applies to the reaction in soil extracts as well as in pure solutions in the range 0.02 to 0.40 parts per million of phosphorus.

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