Optimization of Ultrasound-Assisted Extraction of Essential and Non-essential/Toxic Trace Metals in Vegetables and Their Determination by FAAS and ICP-OES: an Evaluation of Human Health Risk

2021 ◽  
Author(s):  
Iftikhar -Ul-Haq ◽  
Ejaz Ahmed ◽  
Ahsan Sharif ◽  
Mahmood Ahmed ◽  
Waqar Ahmad
Keyword(s):  
Trace Metals ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Icp Oes ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Toxic Trace Metals

scholarly journals Simultaneous Determination of REEs in Coal Samples Using the Combination of Microwave-Assisted Ashing and Ultrasound-Assisted Extraction Methods Followed by ICP-OES Analysis

Minerals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1103
Author(s):  
Mceliseni Zuma ◽  
Philiswa Nomngongo ◽  
Nomvano Mketo
Keyword(s):  
Inductively Coupled Plasma ◽  
Bath Temperature ◽  
Extraction Methods ◽  
Icp Oes ◽  
Ultrasound Assisted Extraction ◽  
Microwave Assisted ◽  
Ultrasonic Bath ◽  
Assisted Extraction ◽  
Ultrasound Assisted

The world during the COVID-19 pandemic has led to extensive use of virtual activities by means of electronic devices, which are made up of rare earth elements (REEs). This means that quantitative knowledge of REEs in various resources is crucial for the development of effective recovery methods. Therefore, this report describes a simple microwave assisted ashing followed by ultrasound-assisted extraction (MAA-UAE) for quantitative determination of REEs in coal samples using inductively coupled plasma-optical emission spectroscopy (ICP-OES). Firstly, coal samples were ashed at 55 °C for 4.5 h to form white ashes, which were then treated with dilute HNO3 acid under ultrasonication to enhance the extraction of REEs. The quantitative recoveries (86–120%) of REEs were obtained when 1 mol L−1, 0.1 g, 40 °C, 20 min, and high frequency were applied for [HNO3], sample mass, ultrasonic bath temperature, extraction time, and ultrasonic bath frequency, respectively. The method detection limits of the proposed MAA-UAE method were between 0.0075 and 0.59 µg g−1 with satisfactory precision (<5%). The concentration levels of REEs in South African coals ranged from 1.4 to 105 µg g−1, suggesting that this coal can be a resource for REEs.

scholarly journals Translocation and bioaccumulation of trace metals from industrial effluent to locally grown vegetables and assessment of human health risk in Bangladesh

2020 ◽  
Vol 2 (8) ◽  
Author(s):  
Md. Didarul Islam ◽  
M. Mehedi Hasan ◽  
Ashiqur Rahaman ◽  
Papia Haque ◽  
Md. Sazedul Islam ◽  
...  
Keyword(s):  
Trace Metals ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Industrial Effluent ◽  
Locally Grown
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