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| 1 | Flow injection spectrophotometric determination of vitamin E in pharmaceuticals,milk powder and blood serum using potassium ferricyanide-Fe(Ⅲ) detection system显示文摘A simple and sensitive flow injection spectrophotometric method is reported for the determination of vitamin E using potassium ferricyanide-Fe(Ⅲ detection system. In the presence of vitamin E, Fe(Ⅲ/ferricyanide reduces. The in situ reduced ions are then reacted with unreduced portion of ferricyanide/Fe(Ⅲ to make soluble Prussian blue, which is monitored at absorption wavelength of 735 nm. Linear calibration graph was obtained in the concentration range of 0.1-40 μg mL-1. The relative standard deviations (n = 4) were in the range of 1.1-3.6%, with limits of detection (3 s blank) of 0.04 μg mL-1. The proposed method allowed 12 injections h-1. The method is applied to determine vitamin E in Pharmaceuticals, infant milk and blood serum samples using hexane extraction with the recoveries in the range of 93 ± 3 to 97.5 ± 4%. The method is validated using certified reference materials SRM 968c for blood serum samples. | Saima Jadoon Amir Waseem Mohammad Yaqoob Abdul Nabi | 2010 | Chinese Chemical Letters2010，21，6： | 3 |
| 2 | Chemiluminescent Determination of Cyromazine in Milk Samples Using Copper(III) Chelate-Triton X-100 by Flow Injection Analysis显示文摘 | Muhammad ASGHAR Mohammad YAQOOB Abdul NABI | 2017 | Chemical Research in Chinese Universities2017，33，3： | 2 |
| 3 | Flow-injection Spectrophotometric Determination of Uric Acid in Urine via Prussian Blue Reaction显示文摘A simple and sensitive flow injection(FI) spectrophotometric method was reported for the determination of uric acid based on the reduction of Fe(III)/ferricyanide in the presence of uric acid. The in situ reduced ions reacted with unreduced portion of ferricyanide/Fe(III) to form soluble Prussian blue, which was monitored at an absorption wavelength of 735 nm. The optimized conditions allow a linear calibration graph in a concentration range of 1―100 μmol/L. The relative standard deviation was in a range of 0.5%―2.5%, with a detection limit(3σ blank) of 0.3 μmol/L and a sampling frequency of 60 injection/h was obtained. The effect of common substances present in human physiological fluids on the determination of uric acid was examined. The method was applied to determining uric acid in human urine samples with the recoveries in a range of 96%―105%. The results agree well with those by spectrophotometric reference method at a confidence level of 95%. Spectrophotometric procedures for uric acid determination in clinical samples were reviewed briefly. | WASEEM Amir YAQOOB Mohammad NABI Abdul MURTAZA Ghulam HUSSAIN Izhar | 2011 | Chemical Research in Chinese Universities2011，27，6： | 1 |
| 4 | Flow-injection Determination of Cysteine,N-Acetyl Cysteine and Glutathione in Pharmaceuticals via Potassium Ferricyanide-Fe(Ⅲ) Spectrophotometric System显示文摘A simple flow injection spectrophotometric method is reported for the determination of cysteine,N-acetyl cysteine and glutathione based on the reduction of Fe(Ⅲ)/ferricyanide,the in situ reduced ions are reacted with unreduced portion of ferricyanide/Fe(Ⅲ) to form soluble Prussian blue,which is monitored at 735 nm.The calibration graphs are linear in the concentration ranges of(1―100)×10-6 mol/L for cysteine and N-acetyl cysteine,and(1―50)×10-6 mol/L for glutathione.The relative standard deviations of 1.8%,2.5% and 1.9% were found for eleven replicate analyses of 5×10-6 mol/L cysteine,N-acetyl cysteine and glutathione.The limits of detection(3σ blank) at 5×10-7 mol/L for cysteine,and 3×10-7 mol/L for N-acetyl cysteine and glutathione were obtained.The proposed method allowed 60 injections/h.The effects of common substances present in pharmaceuticals and human physiological fluids were examined.The method was applied to determining cysteine in pharmaceutical formulations with the recoveries in a range of 97% to 106% and the results obtained are agreed well with labeled values. | WASEEM Amir YAQOOB Mohammad NABI Abdul | 2010 | Chemical Research in Chinese Universities2010，26，6： | 1 |
| 5 | Determination of nitrate and nitrite in freshwaters using flow‐injection with luminol chemiluminescence detection显示文摘 | Mohammad Yaqoob Beatriz Folgado Biot Abdul Nabi Paul J. Worsfold | 2011 | Luminescence2011，，5： | 1 |
| 6 | Comparison of chest CT scan findings between COVID-19 and pulmonary contusion in trauma patients based on RSNA criteria:Established novel criteria for trauma victims显示文摘Propose:In this study,we re-assessed the criteria defined by the radiological society of North America(RSNA)to determine novel radiological findings helping the physicians differentiating COVID-19 from pulmonary contusion.Methods:All trauma patients with blunt chest wall trauma and subsequent pulmonary contusion,COVID-19-related signs and symptoms before the trauma were enrolled in this retrospective study from February to May 2020.Included patients(Group P)were then classified into two groups based on polymerase chain reaction tests(Group Pa for positive patients and Pb for negative ones).Moreover,44 patients from the prepandemic period(Group PP)were enrolled.They were matched to Group P regarding age,sex,and trauma-related scores.Two radiologists blindly reviewed the CT images of all enrolled patients according to criteria defined by the RSNA criteria.The radiological findings were compared between Group P and Group PP;statistically significant ones were re-evaluated between Group Pa and Group Pb thereafter.Finally,the sensitivity and specificity of each significant findings were calculated.The Chi-square test was used to compare the radiologica丨findings between Group P and Group PP.Results:In the Group PP,73.7%of all ground-glass opacities(GGOs)and 80%of all multiple bilateral GGOs were detected(p<0.001 and p=0.25,respectively).Single bilateral GGOs were only seen among the Group PP.The Chi-square tests showed that the prevalence of diffused GGOs,multiple unilateral GGOs,multiple consolidations,and multiple bilateral consolidations were significantly higher in the Group P(p=0.001,0.01,0.003,and 0.003,respectively).However,GGOs with irregular borders and single consolidations were more significant among the Group PP(p=0.01 and 0.003,respectively).Of note,reticular distortions and subpleural spares were exclusively detected in the Group PP.Conclusion:We concluded that the criteria set by RSNA for the diagnosis of COVID-19 are not appropriate in trauma patients.The clinical signs and symptoms are not always useful either.The presence of multiple unilateral GGOs,diffused GGOs,and multiple bilateral consolidations favor COVID-19 with 88%,97.62%,and 77.7%diagnostic accuracy. | Hossein Abdolrahimzadeh Fard Salahaddin Mahmudi-Azer Qusay Abdulzahraa Yaqoob Golnar Sabetian Pooya Iranpour Zahra Shayan Shahram Bolandparvaz Hamid Reza Abbasi Shiva Aminnia Maryam Salimi Mohammad Mehdi Mahmoudi Shahram Paydara Roham Borazjani Ali Taheri Akerdi Masome Zare Leila Shayan Mohammadreza Sasani | 2022 | Chinese Journal of Traumatology2022，25，3： | 0 |
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