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Malachite green method compared to ascorbic acid for estimating small amounts of phosphorus in water, 0.01 M calcium chloride, and olsen soil extracts

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Title Malachite green method compared to ascorbic acid for estimating small amounts of phosphorus in water, 0.01 M calcium chloride, and olsen soil extracts
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Creator A. Subba Rao , K. Sammi Reddy & P. N. Takkar
 
Subject Chemical P fractions
 
Description Not Available
Malachite green method has been evaluated for estimating minute quantities
of phosphorus (P) in water, 0.01M calcium chloride (CaCl2), and Olsen
[sodium bicarbonate (NaHCO3)] extracts often soils of varying properties.
The precision and accuracy of the malachite green method was better than
that of the ascorbic acid method to estimate P in these three extracts. The
recovery of added P ranged from 95.3-99.3% in water, 96-100% in 0.01M
CaCl2, and 96.7-100% in Olsen extracts. The ascorbic acid method
underestimated the amounts of 0.01M CaCl2-P and its precision was also
lower than the malachite green method. It is possible to predict the P
concentration in the three extracts equal to malachite green method from the
ascorbic acid P values by using regression equations.
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Date 2021-08-21T04:53:14Z
2021-08-21T04:53:14Z
2014-06-30
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/58995
 
Language English
 
Relation Not Available;
 
Publisher Not Available