Study of Material Properties for Microwave Assisted Digestion of Fallopia Multiflora for Multielement Analysis by ICP-AES

2014 ◽  
Vol 978 ◽  
pp. 15-18
Author(s):  
Hong Bo Han ◽  
Yi Zhong ◽  
Yi Diao ◽  
Jian Mei Deng ◽  
Min Jie Li
Keyword(s):  
Material Properties ◽  
Detection Limits ◽  
Multielement Analysis ◽  
Metallic Elements ◽  
Recovery Rates ◽  
Microwave Assisted ◽  
Relative Standard ◽  
Standard Deviations ◽  
Environment Condition ◽  
Microwave Assisted Digestion

In this work, the contents of all elements including Cu, Fe, Zn, Al, Mn, Cd, Pb, Ti and As were tested by ICP-AES technique, which elements root in Fallopia multiflora from different place such as Renhe county, Miyi county, Qianjiang county and so on. Detection limits ranged 0.0021ug/ml-1 and 0.076ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 95.52% and 107.2%. The consequence showed that there were many metallic elements in Fallopia multiflora from different places; contents of Fe and Al were highest in Renhe county’s sample specially; contents of Mn, Cu, Zn and Ti were moderately high in Yanbian county specially; and contents of As, Cd and Pb were lowest in Qianjiang county. concentrations of elements within Fallopia multiflorafrom different places were different, which may have some relations with the environment where Fallopia multiflora grew. So ,its necessary to monitor the environment condition of plant surronding.

ICP-AES Determination of Elements in Elsholtzia rugulosa Hemsl. after Microwave Assisted Digestion

2014 ◽  
Vol 543-547 ◽  
pp. 1136-1139
Author(s):  
Hong Bo Han ◽  
Yi Diao ◽  
Hui Ping Wei ◽  
Shu Quan Wan ◽  
Da Fen Zhang
Keyword(s):  
Detection Limits ◽  
Recovery Rates ◽  
Microwave Assisted ◽  
Relative Standard ◽  
Standard Deviations ◽  
Microwave Assisted Digestion

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 E. rugulosa from different places. Detection limits ranged 0.0029 ug/ml-1 and 0.079 ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 93% and 105.8%. The results showed that there were rich elements in E. rugulosa from different places; contents of Fe and Al were highest; contents of Mn, Zn and Ti were moderately high; and contents of Cu, As, Cd and Pb were lowest. Finally, concentrations of elements within E. rugulosa from different places were different, which may have some relations with the environment where it grew. As a result, the determining method which elements of E. Rugulosa are determined by ICP-AES is rapid, accurate and convenient.

Study of Material Properties for the Multielement in Dipsacus Asper Wall — From Panzhihu with Application of Microwave Assisted Digestion and the ICP-AES Method

2014 ◽  
Vol 978 ◽  
pp. 11-14
Author(s):  
Hong Bo Han ◽  
Qiang Deng ◽  
Yi Diao ◽  
Jian Mei Deng ◽  
Min Jie Li
Keyword(s):  
Material Properties ◽  
Detection Limits ◽  
Important Goal ◽  
Metal Elements ◽  
Microwave Assisted ◽  
Dipsacus Asper ◽  
Relative Standard ◽  
Metallic Element ◽  
Standard Deviations ◽  
Microwave Assisted Digestion

In this research, these elements such as Cu, Fe, Al, Cd, Pb,Mn, Zn, Ti and As were measured by ICP-AES equipment, the elements derived from Dipsacus asper Wall. from different places such as Gesala county, Pingdi county, Puwei county,Ala county etc. Detection limits ranged 0.0020 ug/ml-1 and 0.079ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 94.5% and 107.2%. The results showed that there were many metal elements in Dipsacus asper Wall. from different location; contents of Fe and Al were highest in Panlian county’s sample specially; contents of Mn, Cu, Zn and Ti were moderately high inYumen county specially; and contents of As, Cd and Pb were lowest in Yongxing county. From the result we tested,It was differernt the contents of metallic element of all sample origined from differnt place.It’s relation to environment. so, environment supervise was important goal to achieve.

Determination of Nine Microelements in Nostoc commune Vauch by ICP-AES

2012 ◽  
Vol 518-523 ◽  
pp. 5020-5023 ◽  
Author(s):  
Yi Diao ◽  
Hong Bo Han ◽  
Da Fen Zhang ◽  
Jian Ping Zhou ◽  
Zu Jun Yang
Keyword(s):  
Toxic Elements ◽  
Detection Limits ◽  
Nostoc Commune ◽  
Recovery Rates ◽  
Relative Standard ◽  
Standard Deviations

In this paper,the contents of nine elements including Cu, Fe, Mn, Zn, Al, Cd, Pb, Ti and V were determined by ICP-AES technique, which elements originated from Nostoc commune Vauch from different places. Detection limits ranged 0.0018 ug•ml-1 and 0.068 ug•ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 95.8% and 105.6%. The results showed that there were rich elements in N. commune Vauch from different places; contens of Fe, Al and V were highest; contents of Mn, Zn and Ti were moderately high,and contents of Cu, Cd and Pb were lowest. Futhermore, Cu, Fe, Mn, Zn and V were essential to people’s health,and Al, Cd, Pb and Ti had potentially physiologically toxic.Finally,Concentrations of elements within N. commune Vauch from different places were different,which may have some relations with the soil and environment where N. Commune grew.As a result, the determining method which elements of N. Commune are determined by ICP-AES is rapid,accurate and convenient, and wild N. Commune may contain toxic elements because of pollutional soil and environment,so N. Commun cultivated artificially can effectively reduce harmful elements.

Determination of Microelements in Balanophora involucrate Hook. f. by ICP-AES

2014 ◽  
Vol 543-547 ◽  
pp. 1132-1135
Author(s):  
Hong Bo Han ◽  
Yi Diao ◽  
Hui Ping Wei ◽  
Shu Quan Wan ◽  
Da Fen Zhang
Keyword(s):  
Toxic Elements ◽  
Detection Limits ◽  
Recovery Rates ◽  
Relative Standard ◽  
Standard Deviations

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 B. involucrate from different places. Detection limits ranged 0.0029 ug/ml-1 and 0.079 ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 94.8% and 105.8%. The results showed that there were rich elements in B. involucrate 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 peoples health, and Al, Cd, As, Pb and Ti had potentially physiologically toxic. Finally, concentrations of elements within B. involucrate from different places were different, which may have some relations with the environment where B.involucrate grew. As a result, the determining method which elements of B. involucrate. are determined by ICP-AES is rapid, accurate and convenient, and wild B. involucrate may contain toxic elements because of pollutional soil and environment, so B.involucrate cultivated artificially can effectively reduce harmful elements.

scholarly journals Simultaneous Determination of Nitroimidazoles and Quinolones in Honey by Modified QuEChERS and LC-MS/MS Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Haiyan Lei ◽  
Jianbo Guo ◽  
Zhuo Lv ◽  
Xiaohong Zhu ◽  
Xiaofeng Xue ◽  
...  
Keyword(s):  
Recovery Rates ◽  
Inhibition Effect ◽  
Standard Curve ◽  
Modified Quechers ◽  
Relative Standard ◽  
Acacia Honey ◽  
The Matrix ◽  
Liquid Chromatography Tandem Mass ◽  
Standard Deviations

This study reports an analytical method for the determination of nitroimidazole and quinolones in honey using liquid chromatography-tandem mass spectrometry (LC-MS/MS). A modified QuEChERS methodology was used to extract the analytes and determine veterinary drugs in honey by LC-MS/MS. The linear regression was excellent at the concentration levels of 1–100 ng/mL in the solution standard curve and the matrix standard curve. The recovery rates of nitroimidazole and quinolones were 4.4% to 59.1% and 9.8% to 46.2% with relative standard deviations (RSDs) below 5.2% and the recovery rates of nitroimidazole and quinolones by the matrix standard curve ranged from 82.0% to 117.8% and 79% to 115.9% with relative standard deviations (RSDs) lower than 6.3% in acacia and jujube honey. The acacia and jujube honeys have stronger matrix inhibition effect to nitroimidazole and quinolones residue; the matrix inhibition effect of jujube honey is stronger than acacia honey. The matrix standard curve can calibrate matrix effect effectively. In this study, the detection method of antibiotics in honey can be applied to the actual sample. The results demonstrated that the modified QuEChERS method combined with LC-MS/MS is a rapid, high, sensitive method for the analysis of nitroimidazoles and quinolones residues in honey.

ICP-AES Determination of Mineral Elements in Five Edible Seeds after Microwave Assisted Digestion

2014 ◽  
Vol 881-883 ◽  
pp. 827-830
Author(s):  
Ying Wang ◽  
Qin Chao Ma ◽  
Hao Nan Xu ◽  
Kun Feng ◽  
Yan Tang
Keyword(s):  
Mineral Elements ◽  
Sunflower Seeds ◽  
Acid Digestion ◽  
Microwave Assisted ◽  
Relative Standard ◽  
Edible Seeds ◽  
Pumpkin Seeds ◽  
Melon Seeds ◽  
Microwave Assisted Digestion

The concentrations of 12 elements (Ca, P, K, Na, Mg, Fe, Se, Mn, Zn, Sn, Cu and Al) were determined in raw and roasted pumpkin seeds by ICP-AES following microwave-assisted acid digestion. The accuracy of the method determined by spiking experiments was very good (recoveries 95.48103.2%) and the limits of detection of elements of interest were from 0.1 up to 17.4μg g-1, the relative standard deviations were less than 3.52%. Compared with watermelon seeds, winter melon seeds, sunflower seeds and hanging melon seeds, the results showed the five kinds of roasted melon seeds are all rich in mineral elements.

Comparison of methods for inorganic trace element analysis in croatian olive oils

2008 ◽  
Vol 56 (1) ◽  
pp. 33-40 ◽  
Author(s):  
I. Juranović Ćindrić ◽  
M. Zeiner ◽  
I. Steffan
Keyword(s):  
Trace Element Analysis ◽  
Comparison Of Methods ◽  
Closed Vessel ◽  
Digestion Method ◽  
Element Analysis ◽  
Microwave Assisted ◽  
Olive Oils ◽  
Relative Standard ◽  
Microwave Assisted Digestion

The aim of the present study was a comparison of the analytical methods optimized for the determination of trace elements in olive oils as a basis for further investigations, such as adulteration detection or geographical characterization.Different types of sample preparation procedures prior to ICP-AES and GFAAS determinations were investigated: both open and closed vessel digestion in a steel bomb, as well as microwave-assisted digestion using a closed system, which was selected for further investigations. Recoveries for all elements in olive oil were > 95%. Good reproducibility (up to 10% RSD) was achieved for the measurements of the elements analysed. The sensitivity of the ICP-AES technique was sufficient for the determination of Ca, Fe, Mg and Zn (relative standard deviation approx. 2%). Furthermore, the proposed digestion method allowed the GFAAS determination of Al, Co, Cu, K and Ni in the concentration range of 0.1 to 1.5 μg/g, with relative standard deviations of approximately 3 to 10% for all samples.

Concentrations of booster biocides in sediment and clams from Vietnam

2006 ◽  
Vol 86 (5) ◽  
pp. 1163-1170 ◽  
Author(s):  
Hiroya Harino ◽  
Sayaka Midorikawa ◽  
Takaomi Arai ◽  
Madoka Ohji ◽  
Nguyen Duc Cu ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Simultaneous Determination ◽  
Analytical Method ◽  
Degradation Product ◽  
Detection Limits ◽  
Recovery Rates ◽  
Irgarol 1051 ◽  
Central Vietnam ◽  
Relative Standard

An analytical method for the simultaneous determination of five booster biocides (Sea-Nine 211, Dichlofluanid, Duiron, Irgarol 1051 and Pyrithiones) and degradation product of Irgarol 1051 (M1) in sediment from Vietnam was developed by LC/MS-MS. The recovery rates and relative standard deviation of the booster biocides in the sediment were in the range of 71–108% and 1.5–12%, respectively, and the detection limits were in the range of 0.04–2 μg kg−1 dry. An analytical method for the simultaneous determination of three booster biocides (Sea-Nine 211, Duiron and Irgarol 1051) and M1 in clams was also developed by LC/MS-MS. The recovery rates and relative standard deviations of the booster biocides in the biological samples were in the range of 60–99% and 3.4–6.8%, respectively, and the detection limits were in the range of 0.24–1.1 μg kg−1.The booster biocides in sediment from the coastal area of northern and central Vietnam were measured using this analytical method. Sea-Nine 211, Dichlofluanid, Duiron, Irgarol 1051, M1 and Pyrithiones were detected in the range of 0.09–1.3 μg kg−1 dry, <0.10–13 μg kg−1 dry, 0.11–3.0 μg kg−1 dry, 0.05–4.0 μg kg−1 dry, <0.1–0.43 μg kg−1 dry and <2–420 μg kg−1 dry, respectively. The detection frequencies of Dichlofluanid, M1 and Pyrithiones were low. The species and levels of detected booster biocides varied between sampling stations.Irgarol 1051 and its degradation product M1 were not detected in clams.

scholarly journals Quantitative Detection of Chromium Pollution in Biochar Based on Matrix Effect Classification Regression Model

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2069
Author(s):  
Mei Guo ◽  
Rongguang Zhu ◽  
Lixin Zhang ◽  
Ruoyu Zhang ◽  
Guangqun Huang ◽  
...  
Keyword(s):  
Regression Model ◽  
Matrix Effect ◽  
Nearest Neighbor ◽  
Quantitative Detection ◽  
Least Squares Regression ◽  
K Nearest Neighbor ◽  
Breakdown Spectroscopy ◽  
Relative Standard ◽  
Calibration Samples ◽  
Standard Deviations

Returning biochar to farmland has become one of the nationally promoted technologies for soil remediation and improvement in China. Rapid detection of heavy metals in biochar derived from varied materials can provide a guarantee for contaminated soil, avoiding secondary pollution. This work aims first to apply laser-induced breakdown spectroscopy (LIBS) for the quantitative detection of Cr in biochar. Learning from the principles of traditional matrix effect correction methods, calibration samples were divided into 1–3 classifications by an unsupervised hierarchical clustering method based on the main elemental LIBS data in biochar. The prediction samples were then divided into diverse classifications of calibration samples by a supervised K-nearest neighbor (KNN) algorithm. By comparing the effects of multiple partial least squares regression (PLSR) models, the results show that larger numbered classifications have a lower averaged relative standard deviations of cross-validation (ARSDCV) value, signifying a better calibration performance. Therefore, the 3 classification regression model was employed in this study, which had a better prediction performance with a lower averaged relative standard deviations of prediction (ARSDP) value of 8.13%, in comparison with our previous research and related literature results. The LIBS technology combined with matrix effect classification regression model can weaken the influence of the complex matrix effect of biochar and achieve accurate quantification of contaminated metal Cr in biochar.

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