Organic complexation and total dissolved trace metal analysis in estuarine waters: comparison of solvent-extraction graphite furnace atomic absorption spectrometric and chelating resin flow injection inductively coupled plasma-mass spectrometric analysis

Ndungù, Kuria; Franks, Robert P.; Bruland, Kenneth W.; Flegal, A. Russell

doi:10.1016/s0003-2670(03)00063-1

Cited by 106 publications

(55 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A 30-mL aliquot of acidified sample was then ultraviolet (UV) digested (Ndung'u et al 2003). Concentrations of Co, Cu, Ni, Zn, and Pb were measured by high-resolution inductively coupled plasma magnetic sector mass spectrometry (ICP-MS) with a Finnigan Element ICP-MS and a Finnigan microsampler, according to established methods (Ndung'u et al 2003).…”

mentioning

confidence: 99%

Contrasting biogeochemistry of six trace metals during the rise and decay of a spring phytoplankton bloom in San Francisco Bay

Luengen

Raimondi

Flegal

2007

Limnology & Oceanography

View full text Add to dashboard Cite

The spring 2003 phytoplankton bloom in South San Francisco Bay (South Bay) affected the cycling of Mn, Co, Zn, Ni, and Pb, but not Cu. We followed this diatom bloom for 2 months, capturing a peak in chlorophyll a (Chl a) of .150 mg L 21 and then an increase in dissolved organic carbon of .400 mmol L 21 as phytoplankton decomposed. To determine how the stages of the bloom affected metal concentrations, we used principal component analysis to reduce our 15 water chemistry variables into a bloom factor, a sorbent factor, and a decay factor. Increasing values of the bloom factor, which was a composite of dissolved oxygen, Chl a, and other variables, significantly accounted for reductions in dissolved Mn, Ni, and Pb. We attributed those declines to microbial oxidation, phytoplankton uptake, and sorption onto phytoplankton, respectively. In contrast, dissolved Cu concentrations were not explained by either the bloom or decay factors, consistent with previous studies showing its strong organic complexation and limited bioavailability in South Bay. The decay factor significantly accounted for increases in dissolved Mn, Co, Zn, and Pb. Decomposing bloom material presumably caused suboxic conditions in surface sediments, resulting in release of metals to overlying waters during reductive dissolution of Mn and Fe (hydr)oxides. These alterations in metal cycling during a nutrient-enriched bloom were evidence of eutrophication. Annually, phytoplankton productivity has the potential to affect metal retention in the estuary; in 2003, 75% of Ni discharged into lower South Bay by wastewater treatment plants was cycled through phytoplankton.

show abstract

mentioning

confidence: 99%

Contrasting biogeochemistry of six trace metals during the rise and decay of a spring phytoplankton bloom in San Francisco Bay

Luengen

Raimondi

Flegal

2007

Limnology & Oceanography

View full text Add to dashboard Cite

show abstract

“…In addition, dissolved nickel and copper concentrations in ambient water samples from the 16 nearshore locations around the island of Guam were quantified using in-line pre-concentration flow injection analysis using ICP-MS (Ndung'u et al, 2003). Samples were treated online with TOYOPEARL AF-Chelate-650M resin in a Perkin-Elmer Flow Injection Analysis System (FIAS) 400 to remove salt from the sample, and then transferred into the ICP-MS for metal concentration quantification.…”

Section: Metal Analysismentioning

confidence: 99%

“…Total recoverable and dissolved copper and nickel concentrations in the effluent and ambient water mixtures were measured using in-line pre-concentration flow injection analysis into an inductively coupled plasma mass spectrometer (ICP-MS) (Ndung'u et al, 2003). Samples were acidified to pH ≤ 2 with quartz-still grade nitric acid in a class 100 HEPA-filtered working bench.…”

Section: Metal Quantificationmentioning

confidence: 99%

Development of Site-Specific Water Quality Criteria for the Arpa Harbor Wastewater Treatment Plant in Tipalao Bay, Guam

Earley¹,

Rosen²,

Rivera-Duarte³

et al. 2016

View full text Add to dashboard Cite

“…Currently, inductively coupled plasma-mass spectrometry (ICP-MS), 3 atomic absorption spectrophotometry (AAS), 4 and neutron activation analysis (NAA) 5 are used mainly under highly controlled laboratory conditions to measure lead in practical applications. However, these methods are expensive and require long analysis times, which are not suitable for in situ environmental screening analysis.…”

Section: Introductionmentioning

confidence: 99%

Determination of Lead by Square Wave Anodic Stripping Voltammetry Using an Electrochemical Sensor

et al. 2013

View full text Add to dashboard Cite

Organic complexation and total dissolved trace metal analysis in estuarine waters: comparison of solvent-extraction graphite furnace atomic absorption spectrometric and chelating resin flow injection inductively coupled plasma-mass spectrometric analysis

Cited by 106 publications

References 38 publications

Contrasting biogeochemistry of six trace metals during the rise and decay of a spring phytoplankton bloom in San Francisco Bay

Contrasting biogeochemistry of six trace metals during the rise and decay of a spring phytoplankton bloom in San Francisco Bay

Development of Site-Specific Water Quality Criteria for the Arpa Harbor Wastewater Treatment Plant in Tipalao Bay, Guam

Determination of Lead by Square Wave Anodic Stripping Voltammetry Using an Electrochemical Sensor

Contact Info

Product

Resources

About