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Mehrorang Ghaedi,Morteza Montazerozohori,Neda Rahimi,Mehdi Nejati Biysreh 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.5
Multi-walled carbon nanotubes (MWCNT) was oxidized and chemically functionalized by 3-hydroxy-4-((3-silylpropylimino) methyl) phenol (HSPIMP) and characterized with FT-IR technique. This new sorbent was used for enrichment and preconcentration of Cu2+, Ni2+, Zn2+, Pb2+, Co2+, Fe3+ ions. Variables such as pH, amount of solid phase, eluting solution conditions (type, volume and concentrations) have significant effect on sorption and recoveries of analytes and the influence was optimized. At optimum value of conditions, the interference of other ions on understudy ions recoveries was investigated. The metal ions loaded on the solid phase via chelation with the new sorbent and subsequently efficiently eluted using 6 mL of 4 mol L-1 HNO3 solution. At each run, metal ions content was determined by flame atomic absorption spectrometry (FAAS). Relative standard deviation (N = 3) for determination of 0.2 mg mL-1 of analytes was between 1.6 and 3.0%, while their detection limit was between 1.0 and 2.6 ng mL-1 (3Sb, n = 10). The sorption capacity of HSPIMP–MWCNT for understudy ions was above 30 mg g-1. The proposed method successfully applied for the extraction and determination of the understudy metal ions in different samples.
Amirreza Monsef,Fatemeh Eghbalian,Neda Rahimi 질병관리본부 2019 Osong Public Health and Research Persptectives Vol.10 No.3
Objectives: Herbal remedies such as purgative manna are used to treat neonatal jaundice. In this study Bilineaster drop (purgative manna) and phototherapy, and phototherapy treatment alone were compared by assessing phototherapy duration and number of days in hospital. Methods: There were 150 consecutive term neonates with jaundice, weighting from 2,500 g to 4,000 g enrolled in this randomized double blind clinical trial. The neonates were randomly assigned to intervention and control groups. The control patients received only phototherapy and the intervention group underwent phototherapy treatment and purgative manna drop (5 drops per kg of body weight, 3 times a day). Direct and total measurements of bilirubin concentration in the serum were measured and the reduction in concentration of bilirubin was calculated. Results: There were 28% of patients whose hospital duration following phototherapy was 2 days, for Bilineaster and phototherapy treatment this was 49.3% of patients. At 48 hours and 72 hours the reduction in the concentration of total bilirubin in the serum was statistically significantly different across groups (p < 0.05) but at 24 hours and 96 hours there were no significant differences between groups (p ˃ 0.05). The reduction in direct bilirubin concentration in the serum was significantly different between groups at 72 hours and 96 hours (p ˃ 0.001). Conclusion: Purgative manna and phototherapy, can statistically significantly reduce total bilirubin concentration at 48 hours and 72 hours compared with phototherapy alone, and reduce the length of hospital stay for jaundiced neonates at 2 days compared with phototherapy treatment.