DETERMINATION OF DISSOLVED ORGANIC PHOSPHORUS IN SOIL SOLUTIONS BY AN IMPROVED AUTOMATED PHOTOOXIDATION PROCEDURE

被引：35

作者：

VAZ, MDR

EDWARDS, AC

SHAND, CA

CRESSER, M

机构：

[1] UNIV ABERDEEN, DEPT PLANT & SOIL SCI, ABERDEEN AB9 2UE, SCOTLAND

[2] MACAULAY LAND USE RES INST, DIV PLANTS, ABERDEEN AB9 2QJ, SCOTLAND

来源：

TALANTA | 1992年 / 39卷 / 11期

关键词：

D O I：

10.1016/0039-9140(92)80129-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An improved automated photo-oxidation procedure to determine dissolved organic phosphorus in soil solutions is described. Organically combined phosphorus is converted quantitatively to orthophosphate under UV radiation and an excess of dissolved oxygen. The orthophosphate is determined spectrophotometrically using the Murphy and Riley procedure, modified by increasing the concentration of ascorbic acid. Fluoride was added to the system to overcome potential interference when working with soil solution. The limit of detection was 0.64 mug/l PO4-3 - P and calibration was linear over the range studied (5-1000 mug/l. PO4-3 - P).

引用

页码：1479 / 1487

页数：9

共 21 条

[1] PHOTO-OXIDATION OF ORGANIC MATTER IN SEA WATER BY ULTRA-VIOLET RADIATION ANALYTICAL AND OTHER APPLICATIONS [J].