scholarly journals Miswak (Salvadora Persica Roots): discovery of a new biomaterial for removing heavy metals from water in Saudi Arabia

2017 ◽  
Vol 51 (1) ◽  
pp. 35-39
Author(s):  
Saad A. Aljlil
2021 ◽  
Vol 9 (10) ◽  
pp. 1439-1448
Author(s):  
Samia S. Barghash ◽  
◽  
Hatem Abdel Moniem Ahmed ◽  
Modhi K. Al-Baker ◽  
◽  
...  

Background: Heavymetalscontaminationincosmeticproducts isbecoming animportant healthprobleminboth worldwide and locally at the level of the Kingdom of Saudi Arabia (KSA).The aim of this study was to detectthe concentration of heavy metals in the most commonly used eyeliners purchased in Saudi Arabia. Also, to assesssafetyawarenessoftoxicelementsofmostconcernheavymetalsin cosmetics. Methods: A cross-sectional survey was designed and distributed electronically in Saudi Arabia in November 2015.The questionnairewas conducted on 769 Saudi women aged from15-60 years old that is using cosmetic products. Secondly, 10samples from 10 different types of eyeliners frequently used in Saudi Arabia were digested. The digested sampleswere analyzed for lead, cadmium andmercury using graphite furnace- atomic absorption spectrometry (GF-AAS). Results:Themajorityofcosmetictypesusedbyparticipantswereeye-linerkohl(73.9%).About(34.59 %) of participants were not aware about heavy metals contents in cosmetics. The heavy metals, cadmium, lead andmercury were detected in all samples with varying concentrations. The level of lead was the highest. There was asignificant difference of cadmium, lead and mercury concentration p< (0.05) in different brands of eyeliner. Therewasstatisticallysignificant difference betweencadmiumandlead alsobetweenmercuryandlead p<0.05ofdifferenteyelinerbrands. Conclusion: It was foundthatthemajorityofparticipantsexpectedthatexpensivecosmeticsaresafe and theypreferred internationalbrandswhichisnotnecessarytobesafe.


2015 ◽  
Vol 22 (2) ◽  
pp. 168-175 ◽  
Author(s):  
Mohamed M. Ibrahim ◽  
Abdul Aziz A. AL Sahli ◽  
Ibrahim A. Alaraidh ◽  
Ali A. Al-Homaidan ◽  
E.M. Mostafa ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Muhammad Waqar Ashraf

The levels of selected heavy metals in popular cigarette brands sold and/or produced in Saudi Arabia were determined by graphite furnace-atomic absorption spectrometry (GFAAS). Average concentrations of Cadmium and Lead in different cigarette brands were 1.81 and 2.46 μg g−1(dry weight), respectively. The results obtained in this study estimate the average quantity of Cd inhaled from smoking one packet of 20 cigarettes to be in the range of 0.22–0.78 μg. Results suggest that the quantity of Pb inhaled of smoking one packet of 20 cigarettes is estimated to be 0.97–2.64 μg. The concentrations of Cd and Pb in cigarettes were significantly different between cigarette brands tested. The results of the present study were compared with those of other regional and international studies.


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