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| 1 | Adsorption of Ce(Ⅳ) Anionic Nitrato Complexes onto Anion Exchangers and Its Application for Ce(Ⅳ) Separation from Rare Earths(Ⅲ)显示文摘Ce(Ⅳ) nitrato complexes were adsorbed on two anion exchangers based on polyvinyl pyridine (PVP) and quaternized PVP incorporated into porous silica matrix. The effect of nitric acid concentration (0.5~6 mol·L -1 ) and temperature (278~318 K) on Ce(Ⅳ) sorption efficiency was investigated. Sorption increased with increasing nitric acid concentration, indicating that Ce(NO3)6 2- complex is the main adsorbed Ce(Ⅳ) species. Oxidation of sorbents by adsorbed Ce(Ⅳ) species resulting in Ce(Ⅲ) release to the solution was observed. Pyridine based anion exchangers exhibited higher oxidation stability compared to the commercial strong base anion exchanger. Ce(Ⅳ) reduction was temperature dependent and obeyed pseudo-first-order reaction kinetics. Column separation of Ce(Ⅳ) from La(Ⅲ) and Y(Ⅲ) was carried out from 6 mol·L -1 nitric acid with PVP based anion exchanger. Reasonable Ce(Ⅳ) breakthrough capacity (0.7 mol·kg -1 PVP) was achieved. No remarkable decrease of capacity was observed within 3 consequent runs. In contrast, Ce(Ⅲ) leakage due to reduction decreased and breakthrough capacity slightly increased. This effect was more pronounced with increasing temperature. Regeneration with 0.1 mol·L -1 nitric acid was successful (recovery 100%±4%) and Ce solution of high purity (>99.97%) with respect to La and Y content was gained. | Ludek Jelinek Mikio Kumagai | 2006 | Journal of Rare Earths2006，24，4： | 9 |
| 2 | Electro-Oxidation of Concentrated Ce(Ⅲ) at Carbon Felt Anode in Nitric Acid Media显示文摘Electro-oxidation of Ce(Ⅲ) to Ce(Ⅳ) in parallel plate flow type electrolyzer divided with cation exchange membrane was carried out in nitric acid media at carbon felt anode under galvanostatic conditions. Carbon felt was used as an anode for its high specific surface area and high oxygen evolution overpotential. Pt coated Ti plates were used as cathode and anode current feeder. The oxidation of 1 mol·L -1 Ce(Ⅲ) solution in 2 mol·L -1 HNO3 was proceeding with a high current efficiency (92%) until about 80% of Ce(Ⅲ) was oxidized. Then, oxygen evolution, accompanied by terminal voltage jump, took place, lowering current efficiency. Ce(Ⅲ) was oxidized up to 90% with current efficiency of 62%. In this mode, strong carbon felt anode oxidation was observed. The wear out of carbon felt was 46% in six consequent runs (6 h of operation). After each run, carbon felt surface had to be renewed with slightly alkaline solution to remove carbon oxidation products and ensure regular operational conditions. When anode surface was blocked, oxygen evolution took place from the beginning of electrolysis due to higher actual current density. The wear out of carbon felt anode could be minimized by means of oxygen evolution prevention. In the case when electrolysis had been stopped before oxygen evolution started (at Ce(Ⅳ) conversion of about 80%), the wear out of anode was less than 2% during 6 consequent runs (4 h of operation). | Jelinek Ludek Mikio Kumagai | 2006 | Journal of Rare Earths2006，24，3： | 6 |
| 3 | Direct Spectroscopic Determination of Europium( Ⅱ ) Concentration During Europium( Ⅲ ) Electro-Reduction in Hydrochloric Acid Medium显示文摘 | Ludek Jelinek Tsuyoshi Arai Wei Yuezhou Mikio Kumagai | 2007 | Journal of Rare Earths2007，25，1： | 2 |
| 4 | Monitoring dioxins and PCBs in eggs as sensitive indicators for environmental pollution and global contaminated sites and recommendations for reducing and controlling releases and exposure显示文摘This review compiles information on PCDD/F-and PCB-contaminated eggs from 20 years of global egg monitoring around emission sources in four continents conducted by the International Pollutants Elimination Network(IPEN)and Arnika as well as a compilation of data from scientific literature.IPEN monitored 127 pooled egg samples including samples from 113 chicken flocks at potential PCDD/F-and PCB-contaminated sites around priority sources listed in the Stockholm Convention(e.g.waste incinerators,metal industries,cement plants,and open burning).99(88%)of pooled egg samples were above the EU maximum limits for PCDD/Fs(2.5 pg PCDD/F-TEQ/g fat)or the sum of PCDD/Fs and dioxinlike PCBs(5 pg PCDD/F-PCB-TEQ/g fat).Children consuming such eggs exceed the tolerable weekly intake(TWI).This demonstrates that close to 90%of these areas were not safe for the production of free-range eggs.Sixteen out of the 113 egg samples(14%)were contaminated above 50 pg TEQ/g fat and exceeded the EU maximum limit more than 10 times.From the 26 pooled egg samples around incinerators 24(92%)exceeded the limit with a mean of 43.1 pg TEQ/g fat(2.6e234 pg TEQ/g).All 21 egg samples around metal industries(4.4e112.6 pg TEQ/g fat)were above limits with mean concentration of 26.0 pg TEQ/g fat.Also all 7 egg samples measured at e-waste recycling sites were above limits(mean 308 pg TEQ/g fat).In 58(51%)pooled egg samples the PCB-TEQ was above 5 pg TEQ/g fat exceeding the EU maximum limit with dioxin-like PCBs alone.This highlights the role of commercial PCBs for global contamination with dioxin-like compounds.It was discovered that around metal industries,shredder plants,open burning sites of e-waste and dump sites,a high share of contamination was caused by dl-PCBs.This clearly shows severe PCB release from the end-of-life management of PCB-containing equipment in developing countries.Also highly contaminated eggs were found at many sites where plastic was incinerated.The highest contaminated egg sample ever measured came from an e-waste site in Ghana and had 856 pg TEQ/g fat plus 300 pg TEQ from brominated dioxins(PBDD/Fs).Other extreme PCDD/F contaminations of eggs were found at a chlor-alkali site(514 pg TEQ/g fat),Agent Orange contaminated areas in Vietnam(490,249 and 246 pg TEQ/g fat)and e-waste sites(568 and 520 pg TEQ/g fat).Where DR CALUX®bioassay revealed higher TEQ compared to measured PCDD/F-PCB-TEQ in IPEN studies,polybrominated PBDD/F were also measured and detected up to 300 pg TEQ/g fat at e-waste sites.One positive outcome from the IPEN studies is that all 10 pooled supermarket eggs in developing countries were below regulatory limit.Policy recommendations are made including:a systematic assessment of areas around PCDD/Fs and PCBs sources;measures for reduction of exposures of populations;urgent control of emission sources including PCB equipment,the open burning of plastic,and the use of plastic as fuel in boilers/incinerators in developing countries without air pollution control.Furthermore,soil limits need to be re-assessed and lowered for free-range poultry. | Jindrich Petrlik Lee Bell Joe DiGangi Serge Molly Allo'o Allo'o Gilbert Kuepouo Griffins Ochieng Ochola Valeriya Grechko Nikola Jelinek Jitka Strakova Martin Skalsky Yuyun Ismawati Drwiega Jonathan N.Hogarh Eric Akortia Sam Adu-Kumi Akarapon Teebthaisong Maria Carcamo Bjorn Beeler Peter Behnisch Claudia Baitinger Christine Herold Roland Weber | 2022 | Emerging Contaminants2022，8，1： | 2 |
| 5 | Percutaneous transpedicular biopsy of vertebral body lesions 显示文摘 | Jelinek J Kransdorf M Gray R | 1996 | Spine1996，21，： | 1 |
| 6 | Use of fraetal theory in neuroseienee: methods, advantages, and potential problems 显示文摘 | Fernandez E Jelinek HF | 2001 | Methods2001，24，4： | 1 |
| 7 | Fungui Paecilomyces:a new agent in laboratory animals显示文摘 | Kunstyr 1 Jelinek F Bitzenhofer U | 1997 | Lab Anim1997，31，1： | 1 |
| 8 | Generic and illness --specific quality of life in obsessive--compulsive disorder 显示文摘 | Hauschildt M Jelinek L Randjbar S | 2010 | Behav Cogn Psyehother2010，38，4： | 1 |
| 9 | The discovery and development of the Combretastatins显示文摘 | Pinney KG Jelinek C Edvardsen K | | 0，，： | 1 |
| 10 | Giant cell tumor of the tendon sheath:Mr findings in nine ca- ses显示文摘 | Jelinek JS Kransdorf M J Shmookler BM | 1994 | AJR Am J Roentgenol1994，162，4： | 1 |
| 11 | Epidemiology and clinical aspects of imported schistosomiasis显示文摘 | Jelinek T von Sonnenburg F Nothdurft HD | 1997 | Med Klin ( Munich )1997，92，1： | 1 |
| 12 | The efficacy of radiotherapy as postoperative treatment for desmoid tumors显示文摘 | Jelinek JA Stelzer KJ Conrad E | 2001 | Int J Radiat Oncol Biol Phys2001，50，： | 1 |
| 13 | Mechanisms of resistance to5-aza-2′-deoxycytidine in human cancer cell lines显示文摘 | Qin T Jelinek J Si J | 2009 | Blood2009，113，3： | 1 |
| 14 | Imaging of periosteal osteosarcoma: radiologic - pathologic comparison 显示文摘 | Murphey MD Jelinek JS Temple HT | 2004 | Radiology2004，233，1： | 1 |
| 15 | Introduction of hypomethy- lation and molecular response after decitabine therapy in patient with chronic myelomonocytic leukemia显示文摘 | Oki Y Jelinek J Shen L | 2008 | Blood2008，111，4： | 1 |
| 16 | Effect of cytarabine and decitabine in combination in human leukemic cell lines显示文摘 | Qin T Youssd EM Jelinek J | 2007 | Clin Cancer Res2007，13，： | 1 |
| 17 | Use of fractal theory inneuroscience: methods, advantages, and potential problems显示文摘 | FERNANDEZ E JELINEK H F | 2001 | Methods2001，24，4： | 1 |
| 18 | Emergency department triage revisited 显示文摘 | FitzGerald G Jelinek GA Scott D | 2010 | Emerg Med J2010，27，2： | 1 |
| 19 | The Effect of Leverage Increases on Earnings Management显示文摘 | Jelinek K | 2007 | Journal of Business & Economic Studies2007，13，2： | 1 |
| 20 | Imaging of periostealosteosarcoma:radiologicpathologic comparison显示文摘 | Murphey M D Jelinek J S Temple H T | 2004 | Radiology2004，233，1： | 1 |
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