scholarly journals A method for liquid spectrophotometric measurement of total and water-soluble iron and copper in ambient aerosols

2021 ◽  
Vol 14 (6) ◽  
pp. 4707-4719
Author(s):  
Yuhan Yang ◽  
Dong Gao ◽  
Rodney J. Weber
Keyword(s):  
Transition Metals ◽  
Inductively Coupled Plasma ◽  
Low Cost ◽  
Fine Particulate Matter ◽  
Measurement Techniques ◽  
Colorimetric Method ◽  
Water Soluble ◽  
Ambient Aerosols ◽  
Inductively Coupled ◽  
Spectrophotometric Methods

Abstract. Determination of transition metals in ambient aerosols is important due to their toxicity to human health. However, the traditional measurement techniques for metal analysis are often costly and require sophisticated instruments. In this study, we developed and verified relatively low-cost liquid spectrophotometric methods for the measurements of iron (Fe) and copper (Cu), the two most abundant transition metals in ambient fine particulate matter (PM2.5). For Fe analysis, we utilized a ferrozine-based colorimetric method, which has been frequently used for water-soluble (WS) Fe determination, and further extended this approach for the measurement of total Fe (water-soluble + water-insoluble). In this method, Fe is quantified through the formation of a light-absorbing ferrozine–Fe(II) complex (absorbance at 562 nm). A similar colorimetric method, which forms a bathocuproine–Cu(I) complex absorbing light at 484 nm, was developed and examined for measurement of WS and total Cu. These methods were applied to 24 h integrated filter samples collected in urban Atlanta. Based on PM2.5 ambient aerosols, total and water-soluble Fe and Cu concentrations were in good agreement with inductively coupled plasma mass spectrometry (ICP-MS) measurements (slopes 1.0±0.1, r2>0.89). The water-soluble components, operationally defined as those species in the aqueous filter extract that pass through a 0.45 µm filter, were further characterized by ultrafiltration, which showed that roughly 85 % of both the Fe and Cu in the water-soluble fraction was composed of species smaller than nominally 4 nm.

scholarly journals A Method for Liquid Spectrophotometric Measurement of Various Forms of Iron and Copper in Ambient Aerosols

2021 ◽  
Author(s):  
Yuhan Yang ◽  
Dong Gao ◽  
Rodney J. Weber
Keyword(s):  
Transition Metals ◽  
Inductively Coupled Plasma ◽  
Low Cost ◽  
Fine Particulate Matter ◽  
Measurement Techniques ◽  
Colorimetric Method ◽  
Water Soluble ◽  
Ambient Aerosols ◽  
Inductively Coupled ◽  
Spectrophotometric Methods

Abstract. Determination of transition metals in ambient aerosols is important due to their toxicity to human health. However, the traditional measurement techniques for metal analysis are often costly and require sophisticated instruments. In this study, we developed and verified relatively low-cost liquid spectrophotometric methods for the measurements of iron (Fe) and copper (Cu), often the two most abundant transition metals in ambient fine particulate matter (PM2.5). For Fe analysis, we utilized a ferrozine based colorimetric method, which has been frequently used for water-soluble (WS) Fe determination, and further extended this approach for the measurement of total Fe (water-soluble + water-insoluble). In this method, Fe is quantified through the formation of a light-absorbing ferrozine-Fe(II) complex (absorbance at 562 nm). A similar colorimetric method, which forms a bathocuproine-Cu(I) complex absorbing light at 484 nm, was developed and examined for measurement of WS and total Cu. These methods were applied to 24-hour integrated filter samples collected in urban Atlanta. Based on PM2.5 ambient aerosols, total and water-soluble Fe and Cu concentrations were in good agreement with inductively coupled plasma mass spectrometry (ICP-MS) measurements (slopes 1.0 ± 0.1, r2 > 0.89). The water-soluble components, operationally defined as those species in the aqueous filter extract that pass through a 0.45 µm pore filter, were further characterized by ultrafiltration, which showed that roughly 85 % of both the Fe and Cu in the water-soluble fraction was composed of components smaller than nominally 4 nm.

Determination on Metal Elements and Water-Soluble Anion in PM2.5

2015 ◽  
Vol 768 ◽  
pp. 25-28
Author(s):  
Zhen Fu ◽  
Ying Wu
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Water Soluble ◽  
High Tech ◽  
Plasma Atomic Emission ◽  
Domestic Waste ◽  
Main Metal ◽  
Metal Elements ◽  
Inductively Coupled ◽  
Waste Burning

Samplings of PM2.5 used to determine water-soluble anions were obtained from four representative sites of Hefei. There are High-tech zone, Binhu new area, Hupo villa, Dongpu reservoir. The other samplings of PM2.5 used to determine metal elements came from four kinds of domestic waste combustion. There are paper, plastic, cotton, rubber. In this article, anions were detected by ion chromatography (IC). It was found that the main anions in PM2.5 are NO3-, SO42-. Metal elements were detected by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Fe, Mn, Zn, Cu, Cd, Cr six kinds of metal elements were detected in this article. The main metal elements in samplings of PM2.5 are Fe and Cu element. The concentrations of Cd and Cr elements are lower in four domestic waste burning.

Determination of Nitrogen, Phosphorus, and Potassium in Water-Soluble Fertilizers by Inductively Coupled Plasma Emission Spectrometry

1987 ◽  
Vol 70 (4) ◽  
pp. 760-761
Author(s):  
Danton D. Nygaard ◽  
John J. Sotera
Keyword(s):  
Inductively Coupled Plasma ◽  
Water Soluble ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Extension Tube ◽  
Plasma Emission Spectrometry ◽  
Phosphorus And Potassium ◽  
Icp Torch ◽  
Nitrogen Phosphorus

Abstract A modification of an inductively coupled plasma (ICP) emission spectrometer is described that enables the simultaneous determination of nitrogen, phosphorus, and potassium in water-soluble fertilizers. A quartz extension tube is added to the ICP torch to exclude air from the plasma, thus allowing accurate nitrogen determination without adversely affecting sensitivity for other analytes. The modification also requires an 18 mg/L argon coolant flow to protect the tube from the heat of the plasma. Detection limits are 20 mg/L for nitrogen and 50 μg/L for phosphorus and potassium. Three NBS reference salts and 2 commercially available fertilizers were analyzed by the method, and results are in excellent agreement with known values.

scholarly journals Determination of Phosphorus in Fertilizers by Inductively Coupled Plasma Atomic Emission Spectrometry

2002 ◽  
Vol 85 (6) ◽  
pp. 1241-1246 ◽  
Author(s):  
Wei Min Yang ◽  
Rhonda L Boles ◽  
Thomas P Mawhinney
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Water Soluble ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled ◽  
Phosphorus Determination

Abstract An inductively coupled plasma atomic emission spectrometry (ICP-AES) method was developed for the determination of phosphorus in fertilizers. Total phosphorus, direct extraction available phosphorus (EDTA), and water-soluble phosphorus, reported as phosphorus pentoxide (P2O5), in 15 Magruder check fertilizers were measured by ICP-AES, and the results were compared with those obtained by the AOAC official method. Five analytical wavelengths of phosphorus, 177.499, 178.287, 213.618, 214.914, and 253.565 nm, were tested for the determination of phosphorus in fertilizers, and their detection limits were obtained. Acid effects of perchloric acid and possible matrix effects of aluminum, calcium, magnesium, potassium, and sodium were negligible for phosphorus determination. Wavelength 213.618 nm was the best analytical wavelength for phosphorus determination by all 3 sample preparation methods for the selected Magruder fertilizers. The results demonstrated that the accuracy and precision of the ICP-AES method were comparable with those of the official methods.

scholarly journals Determination of bromide, chloride, fluoride, nitrate and sulphate by ion chromatography: comparisons of methodologies for rainfall, cloud water and river waters at the Plynlimon catchments of mid-Wales

2007 ◽  
Vol 11 (1) ◽  
pp. 294-300 ◽  
Author(s):  
M. Neal ◽  
C. Neal ◽  
H. Wickham ◽  
S. Harman
Keyword(s):  
Ion Chromatography ◽  
Inductively Coupled Plasma ◽  
Optical Emission Spectroscopy ◽  
Colorimetric Method ◽  
Optical Emission ◽  
Cloud Water ◽  
River Waters ◽  
Inductively Coupled ◽  
Stream Waters

Abstract. The results of determination of bromide, chloride, fluoride, nitrate and sulphate using ion chromatography (IC) are compared with those obtained by colorimetric and inductively coupled plasma optical emission spectroscopy (ICPOES) for rainfall, cloud water and stream waters in the Plynlimon experimental catchments of mid-Wales. For bromide, the concentrations determined by IC are lower than those for the colorimetric method used; the colorimetric method probably determined bromide plus organo-bromine compounds. It is suggested that the values determined by the colorimetric method be termed dissolved labile bromine (DLBr). The study shows that sulphate is the overriding form of sulphur in the waters. For chloride and nitrate, measurements by both methods approach a 1:1 relationship that is barely statistically significantly different from unity. For fluoride, the IC method gives lower values than the colorimetric, especially for the stream waters. However, the colorimetric method determines total fluorine so that a difference is to be expected (for example, fluoride strongly complexes with aluminium that is present, especially in the streamwater).

Water-Soluble and Total Sulfur in Particulate Matter Determined by Inductively Coupled Plasma Dynamic Reaction Cell Mass Spectrometry (ICP-DRC-MS)

2006 ◽  
Vol 3 (2) ◽  
pp. 149 ◽  
Author(s):  
Suk Fun Kan ◽  
Peter A. Tanner
Keyword(s):  
Particulate Matter ◽  
Inductively Coupled Plasma ◽  
Cell Mass ◽  
Water Soluble ◽  
Strongly Correlated ◽  
Dynamic Reaction ◽  
Dynamic Reaction Cell ◽  
Reaction Cell ◽  
Plasma Dynamic ◽  
Inductively Coupled

Environmental Context.Sulfate in particulate matter is usually collected by a high-volume air sampler and analysed as a soluble extract by ion chromatography. The use of an inductively coupled plasma mass spectrometer fitted with a dynamic reaction cell enables not only the water-soluble, but also the total sulfate to be determined at the same time as the analyses of metal ions. Results from Hong Kong show that sulfate is strongly correlated with crustal species in particulate matter. Abstract.An instrumental method has been developed for the determination of sulfur in particulate matter using inductively coupled plasma dynamic reaction cell mass spectrometry. The reaction gas O2 was employed to convert S+ into the diatomic species SO+, and analysed at two different mass-to-charge ratios. The limit of detection for the 32S16O+ determination is ~1 ng S m–3. The method has the advantages that not only soluble sulfur (as commonly analysed by ion chromatography) but also total sulfur can be determined on the same instrument as many metal species. The mean values (± standard deviations) for a spring sampling program of particulate matter of diameter less than 10 μm (PM10) in Hong Kong (n = 13) for soluble and total S were 5.2 ± 1.2 μg m–3 and 5.5 ± 1.3 μg m–3 respectively. These values are quite low owing to a predominantly easterly airstream. Sulfur in PM10 is strongly correlated with the crustal species Ca, Al and Mn.

Comparison of Antimony Determination Methods in Drinking Water

2013 ◽  
Vol 706-708 ◽  
pp. 478-482
Author(s):  
Nan Chen ◽  
Yong Sheng Shi ◽  
Meng Zhao ◽  
Meng Ru Xuan
Keyword(s):  
Inductively Coupled Plasma ◽  
Graphite Furnace ◽  
Low Cost ◽  
Water Environment ◽  
Hydride Generation ◽  
High Sensitivity ◽  
Atomic Fluorescence Spectrometry ◽  
Element Analysis ◽  
Inductively Coupled ◽  
Low Sensitivity

Antimony distributes widely in the environment. And antimony pollution in the water environment is becoming serious. How to detect the content of the antimony correctly and effectively is very important. Graphite furnace atomic absorption method is simple, but low sensitivity; hydride generation atomic fluorescence spectrometry, low cost, good reproducibility, but is harmful to the introduction of substances; inductively coupled plasma mass spectrometry for simultaneous multi-element analysis, high sensitivity, but the operation is cumbersome; inductively coupled plasma spectrometry has low detection limit, high accuracy, but the equipment is expensive, and cost of analysis is high.

scholarly journals A spectrophotometric method for the determination Co-EDTA complexes

2015 ◽  
Vol 3 (4) ◽  
pp. 584-587 ◽  
Author(s):  
Arunachalam Paraneeiswaran ◽  
Sudhir K Shukla ◽  
V.S. Sathyaseelan ◽  
Toleti Subba Rao
Keyword(s):  
Spectrophotometric Method ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Dual Wavelength ◽  
Individual Species ◽  
Edta Complex ◽  
Inductively Coupled ◽  
Spectrophotometric Methods ◽  
Edta Complexes

A precise quantification of Co(II)EDTA complex is required to develop bioremediation approaches for Co(III)EDTA complex that is generated in various industrial processes. It is cumbersome to quantify Co(II)EDTA in a mixture of Co(II)EDTAand Co(III)EDTAby normal UV-visible spectrophotometric methods as both the complexes absorb significantly at 490 nm, which is the λ max of Co(II)EDTA. Whereas other sophisticated techniques such as gas chromatography, atomic absorption spectrophotometer, inductively coupled plasma-atomic emission spectroscopy can measure individual species of Co(II)EDTA or Co(III)EDTA when present alone but are ineffective to measure the Co(II)EDTAprecisely when it is mixed with Co(III)EDTA. Hence, an attempt has been made to develop a spectrophotometric method for its quantification. This paper describes the development of a simple and economic dual wavelength spectrophotometric method for the determination of Co(II)EDTAin a mixture of Co(II)EDTA and Co(III)EDTA complexes. The wavelength pair, 490-580 nm was optimized for the measurement of absorbance for this dual wavelength method of determination of Co(II)EDTA in the presence of Co(III)EDTA. Int J Appl Sci Biotechnol, Vol 3(4): 584-587

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