Detection of water quality parameters in Hangzhou Bay using a portable laser fluorometer

Peng Chen; Delu Pan; Zhihua Mao; Bangyi Tao

doi:10.1016/j.marpolbul.2015.01.023

Detection of water quality parameters in Hangzhou Bay using a portable laser fluorometer

Mar Pollut Bull. 2015 Apr 15;93(1-2):163-71. doi: 10.1016/j.marpolbul.2015.01.023. Epub 2015 Feb 16.

Authors

Peng Chen¹, Delu Pan², Zhihua Mao³, Bangyi Tao³

Affiliations

¹ State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China; State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan 430072, China. Electronic address: rschenpeng@163.com.
² State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China; State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan 430072, China.
³ State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China.

PMID: 25697817
DOI: 10.1016/j.marpolbul.2015.01.023

Abstract

A field, light-weight laser fluorometer based on the method of laser induced fluorescence was developed for water quality monitoring. The basic instrument configuration uses a high pulse repetition frequency microchip laser, a confocal reflective fluorescent probe and a broadband hyperspectral micro spectrometer; it weights only about 1.7 kg. Simultaneous estimates of three important water quality parameters, namely, chlorophyll a (chl-a), colored dissolved organic matter (CDOM), and total suspended matter (TSM) measured by the laser fluorometer were observed to agree well with those measured by traditional methods (0.27-0.84 μg L(-3) chl-a, R(2)=0.88; 0.104-0.295 m(-)(1) CDOM absorption, R(2)=0.90; and 59.8-994.9 mg L(-)(3) TSM, R(2)=0.86) in Hangzhou Bay water. Subsequently, distribution and characteristics of CDOM and chl-a laser fluorescence in Hangzhou Bay were analyzed, which will enhance our understanding of biogeochemical processes in this complex estuarine system at high-resolution, high-frequency and long-term scale.

Keywords: Chlorophyll a; Dissolved organic matter; Fluorescence spectroscopy; Lasers; Raman scattering; Total suspended matter.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Bays / chemistry
China
Chlorophyll / analysis
Chlorophyll A
Environmental Monitoring / instrumentation
Environmental Monitoring / methods*
Environmental Monitoring / standards
Lasers
Light
Water Pollutants / analysis*
Water Quality / standards

Substances

Water Pollutants
Chlorophyll
Chlorophyll A