Improved fluorimetric determination of dissolved aluminium by micelle-enhanced lumogallion complex in natural waters

Ren, J. R.; Zhang, Jing; Luo, Jing; Pei, Xiao Kun; Jiang, Zhen Xi

doi:10.1039/b007593k

Cited by 101 publications

(40 citation statements)

References 23 publications

(33 reference statements)

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“…The biogenic silicon (BSi) in the SPM was determined by leaching with 5% Na 2 CO 3 at 100°C for 100 min. Silicic acid in the leaching solution was analyzed by molybdate-blue spectrophotometry (Mortlock and Froelich 1989), and dissolved aluminum was measured by fluorometry (Ren et al 2001) for mineral correction (Kamatani and Takano 1984). The coefficient of variability (CV) for BSi measurement in the SPM was better than 10% (Liu et al 2005b).…”

Section: Methodsmentioning

confidence: 99%

Nutrient Dynamics in Jiaozhou Bay

Liu

Zhang

et al. 2007

Water Air Soil Pollut: Focus

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Three cruises were carried out in Jiaozhou Bay (JZB) in the neap tide in October 2002 (fall) and in both neap and spring tides in May 2003 (spring) to understand the relative importance of external nutrient inputs versus physical transport and internal biogeochemical processes. Nutrients (NO À 3 , NO À 2 , NH þ 4 , PO 3À 4 , silicic acid, total dissolved nitrogen (TDN) and phosphorus (TDP), dissolved organic nitrogen (DON) and phosphorus (DOP)) were measured. The concentrations of nutrients were higher in the northern part than in the southern part. High concentrations of NH þ 4 and DON in JZB demonstrated the anthropogenic input. Ambient nutrient ratios indicated that the potential limiting nutrients for phytoplankton growth were silicon, and then phosphorus. Nutrients showed an obvious tidal effect with low values at flood tide and high values at ebb tide. Nutrient elements were transported into JZB in the north and output in the south (i.e., into the Yellow Sea), which varied with season, tidal cycle and investigation sites. Water exchange between JZB and the Yellow Sea exports NO À 3 , NH þ 4 and DON out of JZB, while it inputs PO 3À 4 , silicic acid and DOP into JZB. Nutrient budgets demonstrate that riverine input and wastewater discharge are major sources of nutrients, while residual flow is of minor importance in JZB ecosystem. JZB is a sink for the nutrient elements we studied except for DON. Stoichiometric calculations demonstrate that JZB is a net autotrophic system.

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Section: Methodsmentioning

confidence: 99%

Nutrient Dynamics in Jiaozhou Bay

Liu

Zhang

et al. 2007

Water Air Soil Pollut: Focus

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“…BSi in SPM was analyzed by leaching with 5% Na 2 CO 3 at 100°C for 100 min; Al measurement was also taken for mineral correction (Kamatani & Takano 1984). Silicate in the leaching solution was analyzed by the molybdateblue spectrophotometric method (Mortlock & Froelich 1989), and dissolved aluminum by the fluorimetric method of Ren et al (2001). The CV for BSi measurement in SPM samples was better than 10%.…”

Section: Samplingmentioning

confidence: 99%

Ecological significance of biogenic silica in the East China Sea

Liu

Zhang²,

Li³

2005

Mar. Ecol. Prog. Ser.

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Field observations were carried out in the East China Sea (ECS) in October 2000, May 2001 and April-May 2002. Biogenic silica (BSi) in core sediments, sediment traps, and suspended particulate matter (SPM) was measured; silicate profiles in pore waters were examined. The concentration of BSi in SPM was high in coastal areas. The content of BSi in ECS sediments is less than 1%, as the result of tremendous riverine input of terrigenous weathered materials. For the ECS Shelf, the dissolution of BSi in sediment cores is important to maintain high levels of silicate in the water column, supporting prolific primary production by diatoms. BSi burial efficiencies, that is, the silica accumulation rate divided by the sum of the silica accumulation rate and the benthic silicate flux, are estimated to be 36 to 97%, higher than in the Equatorial Pacific Ocean and higher than the global ocean average. BSi regeneration efficiency, that is, the ratio of BSi vertical flux minus the BSi accumulation rate relative to BSi vertical flux, is ca. 80% for the ECS. A silica budget was established for the ECS shelf, and the model output shows that major silicate input comes from the Kuroshio, followed by silicate from the riverine inflow and the Taiwan Strait. About 75% of gross BSi production dissolves in the water column over the ECS Shelf.KEY WORDS: Biogenic silica · Burial · Regeneration · Budget · East China SeaResale or republication not permitted without written consent of the publisher

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“…In order to determine Al concentrations in the mixing of river and oceanic waters, Hydes and Liss (1976) reinvestigated earlier work and developed a batch method based on the lumogallion-Al complex fluorescence with a detection limit of 1.9 nM and an analytical precision of 5% at 37 nM. More recent modifications of the batch method incorporating micelle-enhanced fluorescence using the surfactant Triton-X 100 yielded a detection limit of ~0.7 nM and a sensitivity of 4% at 5 nM Al (Howard et al 1986;Ren et al 2001). …”

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confidence: 99%

An improved flow‐injection analysis method for the determination of dissolved aluminum in seawater

Brown

Bruland

2008

Limnology & Ocean Methods

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An improved, highly sensitive, flow-injection analysis method for the determination of dissolved aluminum in seawater, based on the work of Resing and Measures (1994), is presented. The most significant modification to this earlier work is the use of in-line preconcentration of seawater onto a commercially available resin, eliminating the resin-synthesis step. Other modifications include the addition of a column-conditioning step prior to sample loading that increases the quantitative retention and sensitivity, in-line buffering of samples prior to column loading to achieve optimal sample pH, an increased acid-eluent concentration to efficiently remove Al from the resin column, and an increased reaction buffer concentration. The method has a detection limit of 0.1 nM Al when preconcentrating 10 mL sample and a precision of 2.5% based on replicate analyses of a 5 nM Al sample when preconcentrating 2.5 mL sample. The method was applied to surface and deepwater samples collected in the North Pacific (2004 Sampling and Analysis for Fe [SAFe] cruise) and from surface water samples collected across the Columbia River plume. Results suggest that the SAFe samples could potentially serve as seawater reference materials for dissolved Al following further investigation by other researchers using different methods. The use of low-density polyethylene bottles with low-density polyethylene caps as standard protocol for storage of acidified seawater samples for Al analysis is also discussed.

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Improved fluorimetric determination of dissolved aluminium by micelle-enhanced lumogallion complex in natural waters

Cited by 101 publications

References 23 publications

Nutrient Dynamics in Jiaozhou Bay

Nutrient Dynamics in Jiaozhou Bay

Ecological significance of biogenic silica in the East China Sea

An improved flow‐injection analysis method for the determination of dissolved aluminum in seawater

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