Development of an In Situ Analyzer Based on Sequential Injection Analysis and Liquid Waveguide Capillary Flow Cell for the Determination of Dissolved Reactive Phosphorus in Natural Waters.

ABSTRACT: This study presents an innovative technique for the in situ analysis of aquatic biochemical elements detected through wet chemical processes. A new compact in situ phosphate analyzer based on sequential injection analysis, liquid waveguide capillary flow cell and spectrophotometry was developed, and a safe and modular electronics-chemical separation mechanical structure was designed. The sequential injection system of this analyzer was optimized, and the major functions of this analyzer were studied and estimated. With a 10 cm liquid waveguide capillary flow cell and a 6.3 min time cost of detection, the analyzer reaches a detection limit of 1.4 μg·L-1 (≈14.7 nM, [PO43-]) and a consumption of 23 μL at most for each reagent. This analyzer was operated in situ and online during two scientifi

SUBMITTER: Yang Z 

PROVIDER: S-EPMC7288038 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature