scholarly journals Assessing the Effectiveness of Microelement Removal in the South Tertiary Wastewater Plant, Riyadh KSA

2015 ◽  
Vol 10 (3) ◽  
pp. 772-780
Author(s):  
Leda G Bousiakou ◽  
Rabia Qindeel ◽  
A. S Almuzaini ◽  
Hosham A Alghamdi ◽  
Walid Tawfik ◽  
...  
Keyword(s):  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
Treatment Plant ◽  
World Health Organisation ◽  
World Health ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Element Removal ◽  
Final Effluent

This work focuses on the monitoring of trace element removal from the Riyadh South Tertiary Wastewater Treatment plant using inductively coupled plasma mass spectrometry (ICP-MS). Considering that the final effluent originating from the plant is directed for irrigation purposes towards the farms of Al- Dirayia, Dirab and Wadi Hanifa it is important to consider the possible presence of elevated microelement concentrations that could pose potential threats to the human health. All samples were collected from the initial entrance to the plant representing the raw influent as well as the final exit after chlorination, i.e. the final effluent used for irrigation purposes. Results showed that the concentration of aluminium (Al), phosphorus (P), copper (Cu), manganese (Mn) and lead (Pb) were initially elevated at their entrance to the plant compared to the recommended values by the Environmental Protection Agency (EPA) and the World Health Organisation (WHO), while zinc (Zn), chromium (Cr), molybdenum (Mo), selenium (Se), cobalt (Co), uranium ( U), mercury (Hg), arsenic (As), and cadmium (Cd) were within permissible levels. All microelements showed significant reduction of concentration with values well below the maximum recommendations. The observed results are important for assessing the functions and effectiveness of the treatment methods of the plant as well as ensuring that the final effluent is appropriate for agricultural use.

scholarly journals Determination of total vanadium and vanadium(V) in groundwater from Mt. Etna and estimate of daily intake of vanadium(V) through drinking water

2014 ◽  
Vol 13 (2) ◽  
pp. 522-530 ◽  
Author(s):  
Giovanni Arena ◽  
Chiara Copat ◽  
Angela Dimartino ◽  
Alfina Grasso ◽  
Roberto Fallico ◽  
...  
Keyword(s):  
Drinking Water ◽  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
Natural Waters ◽  
Daily Intake ◽  
Biological Properties ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Mt Etna ◽  
Plasma Mass Spectrometry

Vanadium(V) can be found in natural waters in the form of V(IV) and V(V) species, which have different biological properties and toxicity. The purpose of this study was to determine the concentrations of total V and V(V) in groundwater from the area of Mt. Etna and to assess the estimated daily intake (EDI) of V(V) of adults and children through drinking water. Water was sampled monthly at 21 sites in 2011. Total vanadium was determined by inductively coupled plasma-mass spectrometry (ICP-MS) and speciation by ion chromatography-ICP-MS (IC-ICP-MS). The concentration of V(V) species ranged from 62.8 to 98.9% of total V, with significantly higher concentrations in samples from the S/SW slope of Mt. Etna. The annual mean concentrations of total V exceeded the Italian legal limit of 140 μg/L at four sites on the S/SW slope. In the absence of thresholds for V(V) intake, only the Environmental Protection Agency (EPA) has calculated a reference dose. Children's EDI of V(V) at the sites with the higher V concentrations exceeded EPA thresholds (9 μg/kg/day). In particular, we found in Camporotondo, Mascalucia, Ragalna and San Pietro Clarenza sites children's EDIs of 11, 9.3, 11 and 9.9, respectively. The EDI of V(V) was significantly higher than the literature range (0.09–0.34 μg/kg/day).

scholarly journals Determining the content of toxic elements (Pb, Cd, and As) in herbal plants collected from different sites in northern Vietnam

2020 ◽  
Vol 12 (2) ◽  
pp. 70-77
Author(s):  
Truong Xuan VUONG
Keyword(s):  
Heavy Metals ◽  
Inductively Coupled Plasma ◽  
World Health ◽  
Viet Nam ◽  
Northern Vietnam ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plantago Asiatica ◽  
Plasma Mass Spectrometry ◽  
Health Organization

Plants might contain heavy metals from the surrounding polluted environment. Medicinal herb and plants, commonly used in Vietnam, may pose a risk to public health when polluted with heavy metals such as Pb, Cd and As. This study aims to investigate the content of Pb, Cd, and As in five selected herb plants (Phyllanthus urinaria L., Plantago asiatica L., Eleusine indica L., Wedelia chinensis (Osbeck) Merr, and Artemisia vulgaris L.). The samples were collected from natural sites in some provinces in northern Vietnam. The concentrations of Pb, Cd, and As were determined by the Inductively coupled plasma mass spectrometry (ICP-MS) method. The content of Pb, Cd and As was 0.247 ÷ 32.080 mg kg-1, 0.000 ÷ 1.099 mg kg-1, 0.000 ÷ 2.261 mg kg-1, respectively. A total of 50 out of the 58 investigated samples had concentrations of Pb, Cd, As lower than the permissible values of the World Health Organization (WHO). The remaining samples had contents of Pb or Cd or As significantly higher than the permissible limit defined by WHO. Thực vật có thể bị ô nhiễm do hấp thụ kim loại nặng từ môi trường ô nhiễm xung quanh. Các loại cây thảo dược được sử dụng phổ biến làm thuốc chữa bệnh ở Việt Nam. Chúng có thể gây nguy hiểm cho sức khỏe cộng đồng khi bị ô nhiễm kim loại nặng (Pb, Cd...vv.). Nghiên cứu này nhằm điều tra hàm lượng Pb, Cd và As trong năm loại cây thảo dược (cây Diệp Hạ Châu, cây Mã Đề, cây Cỏ Mần Trầu, cây Sài Đất và cây Ngải Cứu). Các mẫu cây này được lấy từ các địa điểm mọc tự nhiên ở một số tỉnh khác nhau thuộc khu vực miền bắc Việt Nam. Hàm lượng của Pb, Cd, và As được xác định bằng phương pháp ICP-MS. Hàm lượng Pb, Cd và As trong các mẫu phân tích lần lượt nằm trong khoảng là 0.247 ÷ 32.080 mg. Kg-1, 0.000 ÷ 1.099 mg. Kg-1, 0.000 ÷ 2.261 mg. Kg-1. 50 trên 58 mẫu phân tích có hàm lượng Pb, Cd, As thấp hơn giới hạn cho phép do tổ chức y tế thế giới (WHO) quy định. Có 8 trên 58 mẫu cây phân tích có hàm lượng Pb hoặc, Cd hoặc As cao hơn tiêu chuẩn giới hạn của WHO.

Single Particle Inductively Coupled Plasma Mass Spectrometry: Investigating Nonlinear Response Observed in Pulse Counting Mode and Extending the Linear Dynamic Range by Compensating for Dead Time Related Count Losses on a Microsecond Timescale

2019 ◽  
Author(s):  
Ingo Strenge ◽  
Carsten Engelhard
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Nonlinear Response ◽  
Dynamic Range ◽  
Dead Time ◽  
Inorganic Nanoparticles ◽  
Linear Dynamic Range ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

<p>The article demonstrates the importance of using a suitable approach to compensate for dead time relate count losses (a certain measurement artefact) whenever short, but potentially strong transient signals are to be analysed using inductively coupled plasma mass spectrometry (ICP-MS). Findings strongly support the theory that inadequate time resolution, and therefore insufficient compensation for these count losses, is one of the main reasons for size underestimation observed when analysing inorganic nanoparticles using ICP-MS, a topic still controversially discussed.</p>

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