|Table of Contents|

Method Optimization of Determing of Soil Available Phosphorus With  Continuous Flow Analytical System

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2018年07
Page:
94-98
Research Field:
Publishing date:

Info

Title:
Method Optimization of Determing of Soil Available Phosphorus With  Continuous Flow Analytical System
Author(s):
PANG Shihua1; 2; SHEN Yanhui1; YANG Yuanguang1; SUN Defang1; CHEN Hongkun1; 2
(1.Kingenta Ecological Engineering Group Co.Ltd.,Linshu,Shandong 276700；2.State Key Laboratory of Nutrition Resources Integrated Utilization, Linshu，Shandong 276700)
Keywords:
continuous flow analyzer (CFA); molybdenum antimony colorimetric method; optimize; definition
PACS:
-
DOI:
10.11937/bfyy.20173182
Abstract:
Acidic, neutral and alkaline soil were used as research object and tested available P content by continuous flow analyzer（CFA）under the condition of reducing surfactant and increasing detecting efficiency, and evaluated the method accuracy to test leaching liquor of available P.The results showed that there was no significant difference of the soil available P contents measured by CFA and ultraviolet spectrophotometry method.A linear equation could best describe their relationship,Y (CFA-P)=1.103 5X (ultraviolet spectrophotometer-P)-6.439 7.The pearson′s correlation coefficient was 0.999 with a significance level (n=61,P<0.01).The CFA method for soil available P measurement had high precision with relative standard deviation (RSD) less than 1.2%.In summary, after reducing surfactant and improving detection efficiency, continuous flow analyzer could detect soil available phosphorus faster, lower cost, better repeatability, and could meet the requirements of detection.

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Last Update: 2018-04-20