PMID- 32056426
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200615
LR  - 20200615
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 92
IP  - 6
DP  - 2020 Mar 17
TI  - Automated Determination of Dissolved Reactive Phosphorus at Nanomolar to 
      Micromolar Levels in Natural Waters Using a Portable Flow Analyzer.
PG  - 4379-4386
LID - 10.1021/acs.analchem.9b05252 [doi]
AB  - Automated in-field methods for measuring dissolved reactive phosphorus (DRP) over 
      a large concentration range are in high demand for the purpose of better 
      understanding the biogeochemistry of phosphorus in the river-estuary-coast 
      continuum to the open ocean. Here, an automated portable and robust analyzer was 
      described for the determination of nanomolar to micromolar levels of DRP in 
      natural waters. The quantification of DRP was based on classic phosphomolybdenum 
      blue (PMB) chemistry. All the components of the analyzer were computer-controlled 
      using LabVIEW-based laboratory-programmed software. When equipped with a 3 cm 
      Z-type flow cell, the system demonstrated linearity with concentrations up to 12 
      mumol L(-1), a sampling rate of 20 h(-1), a limit of detection of 0.11 mumol L(-1), 
      and relative standard deviations (RSDs) of 0.4-4.6% (n = 11-576). When a 
      solid-phase extraction cartridge was combined with the analyzer, the PMB formed 
      from the sample was automatically concentrated on the hydrophilic-lipophilic 
      balanced sorbent. The concentrated PMB compound was eluted with NaOH solution and 
      measured in the spectrophotometric system. Under optimal conditions, the 
      nanomolar-level mode afforded a sampling rate of 8 h(-1), a limit of detection of 
      1.7 nmol L(-1), and RSDs of 3.0-5.7% (n = 11-120). The system exhibited 
      advantages that included a wide linear range, high sensitivity and 
      reproducibility, low reagent consumption, and insignificant interference from 
      salinity, silicate, arsenate, and other P-containing compounds. The system was 
      successfully applied for discrete sample analysis, fixed site online monitoring, 
      and the real-time underway measurement of DRP in riverine-estuarine-coastal 
      waters.
FAU - Deng, Yao
AU  - Deng Y
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Li, Peicong
AU  - Li P
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Fang, Tengyue
AU  - Fang T
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Jiang, Yiyong
AU  - Jiang Y
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Chen, Jixin
AU  - Chen J
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Chen, Nengwang
AU  - Chen N
AUID- ORCID: 0000-0002-5200-1035
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Yuan, Dongxing
AU  - Yuan D
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
FAU - Ma, Jian
AU  - Ma J
AUID- ORCID: 0000-0003-0693-2995
AD  - State Key Laboratory of Marine Environmental Science, Fujian Provincial Key 
      Laboratory for Coastal Ecology and Environmental Studies, Dongshan Swire Marine 
      Station, College of the Environment and Ecology, Xiamen University, Xiamen 
      361102, People's Republic of China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20200225
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
SB  - IM
EDAT- 2020/02/15 06:00
MHDA- 2020/02/15 06:01
CRDT- 2020/02/15 06:00
PHST- 2020/02/15 06:00 [pubmed]
PHST- 2020/02/15 06:01 [medline]
PHST- 2020/02/15 06:00 [entrez]
AID - 10.1021/acs.analchem.9b05252 [doi]
PST - ppublish
SO  - Anal Chem. 2020 Mar 17;92(6):4379-4386. doi: 10.1021/acs.analchem.9b05252. Epub 
      2020 Feb 25.