Use of flow injection analysis for continuous monitoring of river water quality

Wiryawan, Adam

doi:10.1002/1098-2728(2000)12:3<142::aid-lra5>3.0.co;2-z

Cited by 7 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Svendsen et al, 1995;Jarvie et al, 1998), gaining acceptable representation of temporal variability requires understanding of the bias and precision of different sampling strategies, particularly the frequency of sampling (Kronvang and Bruhn, 1996;Stevens and Smith, 1978;Walling and Webb, 1982). New developments in continuous monitors (Wiryawan, 2000;Hanrahan et al, 2001) offer improved means of sampling short-term variations in P concentrations. The variability in water quality in a river cross-section is also often significant because of incomplete mixing of upstream tributary or pointsource inputs and groundwater seepage.…”

Section: Sampling : Collecting a Representative Samplementioning

confidence: 99%

Review of robust measurement of phosphorus in river water: sampling, storage, fractionation and sensitivity

Jarvie

Withers

Neal

2002

Hydrol. Earth Syst. Sci.

181

164

View full text Add to dashboard Cite

This paper reviews current knowledge on sampling, storage and analysis of phosphorus (P) in river waters. Potential sensitivity of rivers with different physical, chemical and biological characteristics (trophic status, turbidity, flow regime, matrix chemistry) is examined in terms of errors associated with sampling, sample preparation, storage, contamination, interference and analytical errors. Key issues identified include:The need to tailor analytical reagents and concentrations to take into account the characteristics of the sample matrix. The effects of matrix interference on the colorimetric analysis. The influence of variable rates of phospho-molybdenum blue colour formation. The differing responses of river waters to physical and chemical conditions of storage. The higher sensitivities of samples with low P concentrations to storage and analytical errors.Given high variability of river water characteristics in space and time, no single standardised methodology for sampling, storage and analysis of P in rivers can be offered. 'Good Practice' guidelines are suggested, which recommend that protocols for sampling, storage and analysis of river water for P is based on thorough site-specific method testing and assessment of P stability on storage. For wider sampling programmes at the regional/national scale where intensive site-specific method and stability testing are not feasible, 'Precautionary Practice' guidelines are suggested. The study highlights key areas requiring further investigation for improving methodological rigour.

show abstract

Section: Sampling : Collecting a Representative Samplementioning

confidence: 99%

Review of robust measurement of phosphorus in river water: sampling, storage, fractionation and sensitivity

Jarvie

Withers

Neal

2002

Hydrol. Earth Syst. Sci.

181

164

View full text Add to dashboard Cite

show abstract

“…35,36 The parameters that can be determined are nitrite, nitrate, ammonia, phosphate, silica, arsenic, and mercury.…”

Section: Automatic Fia Systems For Water Quality Monitoringmentioning

confidence: 99%

Flow Injection Methods of Analysis for Waters. I. Inorganic Species

Danet

Cheregi

Calatayud

et al. 2001

Critical Reviews in Analytical Chemistry

View full text Add to dashboard Cite

A comprehensive, critical, and an updated review of the applications of flow-injection analysis (FIA) techniques for the analysis of inorganic cations and anions in several types of water samples except marine waters is presented. The preconcentration of metals in water samples and automaton of FIA systems for monitoring water quality are also discussed. The review is documented with 280 references.Key Words: flow-injection analysis, water analysis, analysis of inorganic cations and anions, preconcentration of metals.

show abstract

“…Consequently, the development of field instrumentation capable of providing continuous, real-time, analytical data with good temporal resolution would provide a valuable contribution to the process of characterising water quality [12] and improve our understanding of the biogeochemistry of phosphorus in freshwater systems. [9,13] Flow injection (FI) analysis, which has the characteristics of ease of operation, good precision, and high sample throughput, has been coupled with spectrophotometric detection to monitor FRP in natural waters (e.g., Refs. 6,7,9,14,15).…”

Section: Introductionmentioning

confidence: 99%

A PORTABLE FLOW INJECTION ANALYZER FOR THEIN SITUDETERMINATION OF FILTERABLE REACTIVE PHOSPHORUS (FRP) IN FRESHWATER

Mankasingh

Worsfold

2010

Instrumentation Science & Technology

View full text Add to dashboard Cite

& The development and deployment of a portable flow injection analyzer for continuous, real-time monitoring of filterable reactive phosphorus (FRP) in the Tamar catchment is described. The optimized method can be used for the determination of FRP in freshwater systems (4-150 lg L À1 P) and is capable of sampling with high temporal resolution (up to 15 samples h À1 ). The analyzer, fitted with a pre-filter and an in-line membrane filter (0.45 lm, cellulose acetate), was used in situ (bank-side and shipboard deployment) to provide real-time FRP data and in the laboratory to determine FRP in freshwater samples. The portable FRP analyzer was reproducible (RSD < 5%; n ¼ 3) over the range 4-150 lg L À1 P and accurate, achieving good agreement with a laboratory based air-segmented continuous flow analyzer reference method for a range of freshwater samples from the Tamar catchment in SW England.

show abstract

Use of flow injection analysis for continuous monitoring of river water quality

Cited by 7 publications

References 11 publications

Review of robust measurement of phosphorus in river water: sampling, storage, fractionation and sensitivity

Review of robust measurement of phosphorus in river water: sampling, storage, fractionation and sensitivity

Flow Injection Methods of Analysis for Waters. I. Inorganic Species

A PORTABLE FLOW INJECTION ANALYZER FOR THEIN SITUDETERMINATION OF FILTERABLE REACTIVE PHOSPHORUS (FRP) IN FRESHWATER

Contact Info

Product

Resources

About