Determination of iron in seawater: From the laboratory to in situ measurements

Lin, Mingyue; Hu, Xinping; Pan, Dawei; Han, Haitao

doi:10.1016/j.talanta.2018.05.071

Cited by 34 publications

(10 citation statements)

References 105 publications

(168 reference statements)

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“…However, both of them require tedious sample preparation and pretreatment, expensive equipment, and professional personnel, making them insuitable in applications for autonomous, in situ, and continuous monitoring of heavy metals. In this case, ocean monitoring sensors based on colorimetric, fluorescent, and chemiluminescent methods appear as promising technologies due to the high sensitivity and feasibility, versatility, and reproducibility [84][85][86][87][88][89][90][91][92][93][94][95], and all of these methods have been truly applied for online analysis of heavy metals in seawater.…”

Section: Heavy Metalsmentioning

confidence: 99%

Autonomous and In Situ Ocean Environmental Monitoring on Optofluidic Platform

et al. 2020

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Determining the distributions and variations of chemical elements in oceans has significant meanings for understanding the biogeochemical cycles, evaluating seawater pollution, and forecasting the occurrence of marine disasters. The primary chemical parameters of ocean monitoring include nutrients, pH, dissolved oxygen (DO), and heavy metals. At present, ocean monitoring mainly relies on laboratory analysis, which is hindered in applications due to its large size, high power consumption, and low representative and time-sensitive detection results. By integrating photonics and microfluidics into one chip, optofluidics brings new opportunities to develop portable microsystems for ocean monitoring. Optofluidic platforms have advantages in respect of size, cost, timeliness, and parallel processing of samples compared with traditional instruments. This review describes the applications of optofluidic platforms on autonomous and in situ ocean environmental monitoring, with an emphasis on their principles, sensing properties, advantages, and disadvantages. Predictably, autonomous and in situ systems based on optofluidic platforms will have important applications in ocean environmental monitoring.

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Section: Heavy Metalsmentioning

confidence: 99%

Autonomous and In Situ Ocean Environmental Monitoring on Optofluidic Platform

et al. 2020

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“…For Fe(III), competitive ligand exchange cathodic stripping voltammetry techniques (CLE-CSV) are required to detect pM levels of Fe. No in situ method has been developed and tested (Lin et al, 2018), and unknown Fe-L complexes will need to be broken up by acidification and UV oxidation, then buffered to circumneutral pH, so the competitive ligand can complex the Fe(III) for analysis.…”

Section: Voltammetrymentioning

confidence: 99%

Developing Autonomous Observing Systems for Micronutrient Trace Metals

et al. 2019

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Grand et al. Autonomous Micronutrient Metal Observing Systems technologies to in situ applications; and (4) develop a community-led standardized protocol to demonstrate the endurance and comparability of in situ sensor data with established techniques. Such a vision will be best served through ongoing collaborations between trace metal geochemists, analytical chemists, the engineering community, and commercial partners, which will accelerate the delivery of new technologies for in situ metal sensing in the decade following OceanObs'19.

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“…Solubility of iron in the ocean waters is also very poor. The concentration in this environment is about 3 ppm whereas phytoplankton needs more for proper growth . There is also a negative impact of iron on the environment we live.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive AdSV Method for Fe(III) Determination in Presence of Solochrome Violet RS on Renewable Amalgam Film Electrode

2019

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The new DP AdSV method for high sensitive Fe(III) determination in the presence of Solochrome Violet RS was developed. The use of an innovative renewable amalgam film electrode Hg(Ag)FE allowed to obtain high sensitivity and significantly minimize the mercury consumption. The best results were obtained for surface area of Hg(Ag)FE equal to 11.8 mm2. Instrumental parameters were optimized. The optimal results were obtained using differential pulse technique for the following values: sampling and waiting time ts=tw=10 ms, step potential Es=5 mV, pulse amplitude ΔE=50 mV. Measurements were conducted in 0.05 M acetate buffer (pH 5.6), the concentration of SVRS was equal to 5 μM. Deposition step was carried out at the potential −400 mV for 20 s. Calculated detection limit for 40 s preconcentration time was equal to 1.4 nM (78 ng L−1). The influence of the common in environment, organic and inorganic interferences was studied. The developed method for Fe(III) determination was successfully applied and validated by investigation of certified reference material SPS‐SW2 Batch 118 and recovery of Fe(III) from various spiked samples as snow, tap water and bottom sediments. The repeatability (for 50 nM of Fe(III)) of the developed method expressed as CV was equal 3.1 % (n=5).

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Determination of iron in seawater: From the laboratory to in situ measurements

Cited by 34 publications

References 105 publications

Autonomous and In Situ Ocean Environmental Monitoring on Optofluidic Platform

Autonomous and In Situ Ocean Environmental Monitoring on Optofluidic Platform

Developing Autonomous Observing Systems for Micronutrient Trace Metals

Highly Sensitive AdSV Method for Fe(III) Determination in Presence of Solochrome Violet RS on Renewable Amalgam Film Electrode

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