scholarly journals Determination of Heavy Metals inAlpinia oxyphyllaMiq. Collected from Different Cultivation Regions

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Dan Zhou ◽  
Yurong Fu ◽  
Weiyong Lai ◽  
Junqing Zhang
Keyword(s):  
Heavy Metals ◽  
Quality Control ◽  
Scientific Basis ◽  
Hainan Province ◽  
Alpinia Oxyphylla ◽  
Geographical Source ◽  
Almost All

20 batches ofAlpinia oxyphyllaMiq. were collected from Yunnan, Guangdong, Guangxi, and Hainan province in China. The contents of heavy metals of As, Hg, Pb, Cd, and Cu were determined and compared. The results indicated that geographical source might be a major factor to influence the contents of heavy metals of arsenic (As), mercury (Hg), lead (Pb), cadmium (Cd), and copper (Cu) inAlpinia oxyphyllaMiq. Compared to the criteria of heavy metals, the contents of As, Hg, Pb, and Cd in almost all the samples were in accordance with The Green Trade Standards. The contents of Cu were higher than the criteria for heavy metals except the samples from Changxing town, Qiongzhong county, Maoyang town, Qiongzhong county, Wupo town, Tunchang county, and Nanlv town, Tunchang county, in Hainan province. The best cultivation regions ofAlpinia oxyphyllaMiq. were from Changxing town, Qiongzhong county, Maoyang town, Qiongzhong county, Wupo town, Tunchang county, and Nanlv town, Tunchang county, in Hainan province. This research would provide the scientific basis for quality control and standardization ofAlpinia oxyphyllaMiq.

Determination of heavy metals for the quality control in argentinian herbal medicines by ETAAS and ICP-OES

2007 ◽  
Vol 45 (6) ◽  
pp. 1060-1064 ◽  
Author(s):  
María R. Gomez ◽  
Soledad Cerutti ◽  
Lorena L. Sombra ◽  
María F. Silva ◽  
Luis D. Martínez
Keyword(s):  
Heavy Metals ◽  
Quality Control ◽  
Herbal Medicines ◽  
Icp Oes

Determination of Heavy Metals in Herbal Drinks Using ICP-MS

2014 ◽  
Vol 1060 ◽  
pp. 199-202
Author(s):  
Chutima Limmatvapirat ◽  
Sontaya Limmatvapirat ◽  
Juree Charoenteeraboon ◽  
Chantana Wessapan ◽  
Anchalee Kumsum ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal Contamination ◽  
Biological Activities ◽  
Permissible Limits ◽  
Gum Karaya ◽  
Icp Ms ◽  
Indian Mulberry ◽  
Cat’S Whiskers ◽  
Almost All

Seven groups of herbal drinks including gum karaya, Indian gooseberry, Noni Indian mulberry, cat's whiskers, prickly-leaved elephant's foot, black galingale, and Ling zhi mushroom contain a variety of bioactive compounds such as polysaccharides, terpenes, saponins, and flavonoids. The extracts of these plants have several biological activities such as analgesic, anti-inflammatory, antibacterial, antioxidant and chemoprotective activities that can promote health. The popular uses of herbal drinks in Thailand raise the question about safety of their products, especially for heavy metal contamination. The concentrations of heavy metals such as As, Pb, Cu, Zn, Fe, and Cd in twenty one samples from seven groups of herbal drinks were determined by ICP-MS. None of herbal drinks passed the permissible limits under the Notification of Ministry of Public Health (No. 214) B.E. 2543 (2000) Re: Beverages in Sealed Container by the virtue of the Food Act B.E. 2522 (1979), Thailand. Moreover, the concentrations of Pb and Zn in all analyzed samples were higher than the permissible limits. The concentrations of Fe in almost all analyzed samples as well as the concentrations of As, Cd, and Cu in some analyzed samples were higher than the permissible limits. The levels of heavy metals found in this study raise concerns, not only for the safety of Thai consumers, but also the quality of herbal drinks available in Thailand.

scholarly journals Estimation of Environmental Risk when Eating Raw and Boiled Vegetables

2019 ◽  
Keyword(s):  
Heavy Metals ◽  
Heat Treatment ◽  
Environmental Risk ◽  
Chemical Elements ◽  
Atomic Absorption Spectrophotometry ◽  
Hazard Ratios ◽  
Before And After ◽  
High Concentrations ◽  
Almost All

The risk to human health due the consumption of vegetables is based on the characterization of harmful effects that can develop in the human body in case of the long-term eating of these products. At the same time, when people consume vegetables, it is possible to reduce their content of pollutants by heat treatment, for example, cooking. Therefore, it is relevant to compare the risk that occurs when eating raw and boiled vegetables. Purpose. Determination of environmental risk from the eating of vegetables (carrots and potatoes) with high concentrations of chemical elements and the ability to reduce them in case of boiling. Methods. Field, atomic absorption spectrophotometry, statistical methods were used. Results. On the basis of field-based research, the content of heavy metals - lead, cadmium, zinc, copper and iron and nitrates in cooked and raw carrots and potatoes - was determined on the farmland located in Shevchenkovo settlement of the Kharkiv region and laboratory studies. It turned out that virtually all metals concentrations do not have excessived MAC. To determine the level of influence of cooking on the fruit the relative content of heavy metals before and after cooking were researched. Based on the results of laboratory analysis, the coefficients of concentration of heavy metals in plant products were calculated and the environmental risk from the consumption of vegetables in food was calculated. When comparing all risk agents among themselves by hazard ratios, the predominance of nitrates and cadmium in all samples was detected. It should also be noted that there is a high risk of lead, copper and iron found in carrots. Comparison of test objects with the overall environmental risk for health from their use showed that the highest risk is crude carrots, and the lowest - potatoes are cooked. Heat treatment of carrots reduces the overall risk by only 25%, and potato - by 40%. Conclusions. It is established that after heat treatment almost all substances are partially derived from vegetables. Analysis of the changes occurring in potatoes and carrots after cooking indicates a reduction in the risk of the disease. The risk of the onset of diseases in virtually all organs is highest when carrots are consumed raw.

scholarly journals Kandungan Logam Berat Timbal (Pb) Dan Tembaga (Cu) Pada Akar Dan Buah Mangrove Avicennia marina Di Perairan Tanjung Emas Semarang

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
Endang Supriyantini ◽  
Nirwani Soenardjo
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Avicennia Marina ◽  
Atomic Absorption Spectrophotometry ◽  
Research Area ◽  
Residential Areas ◽  
Purposive Sampling ◽  
Cu Content ◽  
Almost All

Perairan Tanjung Emas merupakan salah satu kawasan pesisir yang dekat dengan aktivitas pelabuhan, industri, dan pemukiman penduduk. Tingginya aktivitas di kawasan Tanjung Emas diduga mengalirkan berbagai limbah yang dapat menimbulkan pencemaran, antara lainpencemaran oleh logam berat Pb dan Cu. Penelitian ini bertujuan untuk mengetahui kandungan logam berat Pb dan Cu dalam air, sedimen, akar, dan buah mangrove Avicennia marinaserta untuk mengetahui tingkat akumulasi terhadap logam-logam tersebut. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dan penentuan lokasi penelitian dilakukan dengan metode purposive sampling. Kemudian logam berat dianalisis menggunakan AAS (Atomic Absorbtion Spectrophotometry). Hasil penelitian menunjukan bahwa kandungan logam berat Pb dan Cu di perairan Tanjung Emas Semarang menunjukkan pencemaran berat karena sudah melebihi batas ambang yang ditentukan yaitu masing-masing 0,01-0,06 mg/L (Pb) dan 0,004-0,14 mg/L (Cu). Kandungan Cu pada sedimen sebesar 1,236-3,212 mg/kg; Cu pada akar2,104-2,529 mg/kg; dan Cu pada buah A. marina 1,640-4,336 mg/kg.Hampir semua hasil ini lebih tinggi bila dibandingkan dengan kandungan Pb pada sedimen 0,251-0,507 mg/kg; Pb pada akar 0,732-1,625 mg/kg; dan Pb pada buah A. marina 0,114-0,345 mg/kg.BCF akar tertinggi ditemukan pada logam Pb yaitu 1,443-6,474 dan TF buah tertinggi ditemukan pada logam Cu yakni 0,674-1,714.Kata Kunci : Logam Berat Pb dan Cu, kolom air,sedimen, akar dan buah A.marina, BCF dan TF A. marina.Tanjung Emas waters were one of the coastal areas near that port activities, industries, and residential areas. The high activities in the area of Tanjung Emas allegedly flowed various wastes that can cause pollution, that is heavy metal Pb and Cu. The aim of this research was to determine the content of heavy metals Pb and Cu in the waters, sediment, roots, and fruits of the mangrove Avicennia marina as well as to determine the level of accumulation for these metals. The method that was used in this research was descriptive method and the determination of the location of research area used purposive sampling method. Then, heavy metals were analysedusing AAS (Atomic Absorption Spectrophotometry). The results showed that the content of heavy metals Pb and Cu in the waters of Tanjung Emas Semarang showed heavy contamination because it exceeds thespecifiedthreshold is 0,01-0,06 mg/L (Pb) and 0,004-0,14 mg/L (Cu). The content of Cu in the sediments was 1,236-3,212 mg/kg; Cucontentat the root was 2,104-2,529 mg/kg; and Cu content in fruits of mangrove A. marina is 1,640-4,336 mg/kg. Almost all of these results was higher when compared with the content of Pb in sediments is 0,251-0,507 mg/kg; Pb at the root is 0,732-1,625 mg/kg; and Pb in A. marina fruits is 0,114-0,345 mg/kg. The BCF highest root was found in Pb is 1,443-6,474 and TF highest fruits found on the committal was 0,674-1,714.Keywords : Heavy Metal Pb and Cu, in waters, Sediment, Roots and Fruit of A. marina, BCF and TFA. marina

The S. Domingos Mine: A study of heavy metal contamination in the water column and sediments of the Chanca River Basin by discharge from an ancient cupriferous pyrite mine (Portugal)

1995 ◽  
Vol 46 (1) ◽  
pp. 145 ◽  
Author(s):  
EG Pereira ◽  
I Moura ◽  
JR Costa ◽  
JD Mahony ◽  
RV Thomann
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Column ◽  
Heavy Metal Contamination ◽  
Sediment Quality ◽  
Heavy Metal Concentration ◽  
Acid Volatile Sulfide ◽  
Stream Flows ◽  
Almost All

The water column and the sediment in the S. Domingos Mine area and the associated drainage stream are heavily contaminated by heavy metals. The Chanca Reservoir, into which this stream flows, shows a localized area where the sediment is contaminated by heavy metals, but in general the water column does not show any contamination. Both water column and sediment quality were analysed, including determination of total heavy metal concentration as well as acid volatile sulfide (AVS) and simultaneously extracted metal (SEM). The ratio between SEM and AVS is less then 1 for almost all sampling sites, showing that the Chanca Reservoir appears to be protected in most areas with respect to both sediment and water column toxity.

scholarly journals Simultaneous Determination of α-Glucosidase Inhibitory Triterpenoids in Psidium guajava Using HPLC–DAD–ELSD and Pressurized Liquid Extraction

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1278
Author(s):  
In-Cheng Chao ◽  
Ying Chen ◽  
Mei-Hua Gao ◽  
Li-Gen Lin ◽  
Xiao-Qi Zhang ◽  
...  
Keyword(s):  
Quality Control ◽  
Simultaneous Determination ◽  
High Performance ◽  
Folk Medicine ◽  
Psidium Guajava ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Evaporative Light Scattering ◽  
Almost All

Psidium guajava, a popular food and medicine dual purposes plant cultivated in tropical and subtropical regions, has been widely used as food crop and folk medicine, such as anti-diabetes agent, around the world. Triterpenoids have been considered as the major active ingredients of P. guajava. In the present study, a high-performance liquid chromatography coupled with diode array and evaporative light scattering detectors (HPLC–DAD–ELSD) method was developed for simultaneous determination of nine triterpenoids in P. guajava. Pressurized liquid extraction (PLE) was performed for sample preparation, and the analysis was achieved on a Cosmosil 5C18-MS-II (Nacalai Tesque, Kyoto, Japan) column eluted with gradient 0.1% aqueous formic acid-methanol system. The drift tube temperature of ELSD was set at 40 °C, and nitrogen flow-rate was at 1.6 L/min. All calibration curves for the analytes showed good linear regression (R2 > 0.9992) within test ranges. The established method was validated for intra-day and inter-day precisions (RSDs < 5%) and accuracy (recovery 94.23–106.87%). The validated method was successfully applied to determinate nine triterpenoids in 15 samples from the leave or fruit of P. guajava. In addition, the α-glucosidase inhibition assay showed good α-glucosidase inhibition activity in almost all the determined triterpenoids. The present study suggested that triterpenoids should be the quality control markers for P. guajava and HPLC–DAD–ELSD was an effective tool for the quality control of P. guajava.

Determination of some heavy metals (Fe, Cu, Zn and Pb) in blood by total reflection X-ray fluorescence

2003 ◽  
Vol 107 ◽  
pp. 203-206 ◽  
Author(s):  
M. Bounakhla ◽  
A. Doukkali ◽  
K. Lalaoui ◽  
H. Aguenaou ◽  
N. Mokhtar ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Total Reflection ◽  
X Ray

Determination of selected heavy metals in tuna fish (Thunnus thynnus)

2013 ◽  
Vol 38 (03) ◽  
Author(s):  
S Mol ◽  
S Karakulak ◽  
S Ulusoy
Keyword(s):  
Heavy Metals ◽  
Thunnus Thynnus ◽  
Tuna Fish
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