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 Metal Elements in Maca from Different Areas by Inductively Coupled Plasma-Atomic Emission Spectrometry

2014 ◽  
Vol 978 ◽  
pp. 19-22 ◽  
Author(s):  
Hong Bo Han ◽  
Qin Dong ◽  
Yi Diao ◽  
Hui Ping Wei ◽  
Min Jie Li
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission ◽  
Plasma Atomic Emission Spectrometry ◽  
Metal Elements ◽  
Inductively Coupled ◽  
Relative Standard

In this paper, the contents of these elements including Cu, Fe, Mn, Zn, Al, Cd, Pb, Ti and As were determined by ICP-AES technique, which elements originated from maca from different places. Detection limits ranged 0.0022 ug/ml-1 and 0.077ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 95.56% and 106.2%. The results showed that there were rich metal elements in maca from different places; contents of Fe and Al were highest; contents of Mn, Zn, Cu and Ti were moderately high, and contents of As, Cd and Pb were lowest. Futhermore, Cu, Fe, Mn, Zn were essential to people’s health, and Al, Cd, As, Pb and Ti had potentially physiologically toxic. Finally, concentrations of elements within macafrom different places were different, which may have some relations with the environment where maca grew. As a result, the determining method which elements of maca. are determined by ICP-AES is rapid, accurate and convenient, and wild macamay contain toxic elements because of pollutional soil and environment, so macacultivated artificially can effectively reduce harmful elements.

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.

Rapid Catalyst Capture Enables Metal-Free Parahydrogen-Based Hyperpolarized Contrast Agents

2018 ◽  
Author(s):  
Danila Barskiy ◽  
Lucia Ke ◽  
Xingyang Li ◽  
Vincent Stevenson ◽  
Nevin Widarman ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Contrast Agents ◽  
Inductively Coupled Plasma ◽  
Organometallic Compounds ◽  
Atomic Emission ◽  
Platinum Group Metals ◽  
Resonance Spectroscopy ◽  
Plasma Atomic Emission ◽  
Inductively Coupled

<p>Hyperpolarization techniques based on the use of parahydrogen provide orders of magnitude signal enhancement for magnetic resonance spectroscopy and imaging. The main drawback limiting widespread applicability of parahydrogen-based techniques in biomedicine is the presence of organometallic compounds (the polarization transfer catalysts) in solution with hyperpolarized contrast agents. These catalysts are typically complexes of platinum-group metals and their administration in vivo should be avoided.</p> <p><br></p><p>Herein, we show how extraction of a hyperpolarized compound from an organic phase to an aqueous phase combined with a rapid (less than 10 seconds) Ir-based catalyst capture by metal scavenging agents can produce pure parahydrogen-based hyperpolarized contrast agents as demonstrated by high-resolution nuclear magnetic resonance (NMR) spectroscopy and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The presented methodology enables fast and efficient means of producing pure hyperpolarized aqueous solutions for biomedical and other uses.</p>

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