Arsenic hazards in Bangladesh (アジア地下水ヒ素汚染問題を考える)
スポンサーリンク
概要
- 論文の詳細を見る
バングラデシュにおける地下水のヒ素汚染による健康障害は,インド・西ベンガル州のそれと同様に深刻である.ラジシャヒ大学地質鉱山学部の研究グループは,1996年以来,日本の応用地質研究会やアジア砒素ネットワークのメンバーと共同して,バングラデシュの20県でヒ素汚染の調査をおこなっている.これまでの現地調査や収集したデータによると,飲料水のWHO最大許容ヒ素濃度(0.05mg/l)を超える高濃度のヒ素に汚染された地下水は,20県すべてにおいて発見されている.バングラデシュには全部で64の県があるが,応用地質研究会とラジシャヒ大学の研究グループは,このうち30県の地下水はヒ素により汚染されているとの疑いを持っている.住民に安全な水を供給するためには,バングラデシュ全域で調査をすすめることが重要である.現在のところ,地下水中のヒ素の起源はよくわかっていない.しかしながら,自然の地球化学的プロセスをへて,鉱物中のヒ素が地下水中に溶け出したと考えられている.高濃度のヒ素汚染は,地下水中の第1鉄の減少と,第四紀の沖積層ないしデルタ堆積物からなる被圧帯水層または半被圧帯水層からの地下水揚水と関係している.ヒ素の起源と移動を解明するためには,サンプリング深度を確認し,帯水層そのものの調査をおこなうことが重要である.ガンジスデルタにおけるヒ素汚染地域は広大な範囲におよび,そこには多くの人々が生活している.これらの人々を救うためには,あらゆる種類の国際援助を駆使して問題解決に取り組む必要がある.もし,ヒ素汚染に対する予防措置が直ちにとられなければ,数多くの人々の死亡が避けられない深刻な状況となっている.まず,人々にヒ素汚染問題の深刻さについて知ってもらうことが,予防措置の第一歩となろう.
- 1997-11-07
著者
-
Rahman Md.
Department Of Precision Science & Technology And Applied Physics Osaka University
-
Rahman Md.
Department Of Agriculture Bsmrau
-
Rahman Md.
Department Of Geology & Mining University Of Rajshahi
関連論文
- Arsenic hazards in Bangladesh (アジア地下水ヒ素汚染問題を考える)
- 21aWD-1 Density functional study on influence of magnetic materials on the dissociative adsorption of O_2
- 21aWD-1 Density functional study on influence of magnetic materials on the dissociative adsorption of O_2
- 18aPS-55 Density functional study of O_2 adsorption on FePt cluster influenced by magnetism
- 30aPS-57 First-principles calculations for the reaction between NaDDC and Cr to produce Cr(DDC)_2ODDC
- 21aPS-75 Benzene-transition metal complex chain on a metal surface : a first principle investigation
- 21aPS-63 Local magnetic moment of multiple-decked sandwich clusters i.e.,V_n(C_6H_6)_(n=1,2) clusters
- 24aPS-167 Change in the magnetic properties of M_n(C_6H_6)_ clusters (n=1, M=Mn,Fe,Co) induced by H_2
- 27aPS-86 Investigation of electric and magnetic properties of [M(C_8H_8)]_∞ (M = transition metal)
- 15aPS-64 Electrical and magnetic properties of a multiple-decked sandwich wires : [M(C_6H_6)]_∞(M=transition metal)
- 15aPS-7 Ortho-para H_2 conversion on a multiple-decked sandwich clusters : M(C_6H_6)_2 (M=Mn, Fe and Co)
- B-17-16 Performance Analysis of A Supervised Learning Based Automatic Modulation Classification Technique
- 21pWE-5 Electric and magnetic properties of benzene-transition metal multiple-decker sandwich chain : a density functional study
- 18aPS-56 Theoretical study on the electric and magnetic properties of benzene-transition metal multiple -decked sandwich chain
- 23aPS-45 Theoretical investigation of magnetic properties of a benzene-iron multiple-decked sandwich chain
- 30aPS-45 Theoretical investigation of a benzene-vanadium multiple-decked sandwich chain on a gold surface
- Dipole and Deformation Dipole Polarization of Ions in Rock-Salt Structure Crystals(Condensed Matter : Structure, Mechanical and Thermal Properties)
- First Principles Study of Electric and Magnetic Properties of Benzene-Iron Multiple-Decked Sandwich Chain(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Density Functional Study for Chemical Reaction between Cr and Fe with Sodium Diethyldithiocarbamate (NaDDC)
- Density Functional Theory Investigation of One-Dimensional Organic-Metallic Multiple-Decked Sandwich Model (第45回真空に関する連合講演会プロシーディングス--2004年10月27日〜29日,大阪)
- Spin Polarization of a Multiple-decked Sandwich Clusters : M(C_6H_6)_2(M = Mn, Fe, Co)(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- 1P101 1G1310 FUNCTIONAL CHARACTERIZATION OF THE RECOMBINANT HUMAN TUMOR SUPPRESSOR 101F6 PROTEIN, A CYTOCHROME B561 HOMOLOGUE(Heme proteins,Oral Presentations,The 48th Annual Meeting of the Biophysical Society of Japan)
- B-17-19 Performance Evaluation of Supervised Learning based Automatic Modulation Classification
- Diameter Dependent Magnetic and Electronic Properties of Single-Walled Carbon Nanotubes with Fe Nanowires
- Dose-dependent effect of MK-801 on the levels of neuropeptides processing enzymes in rat brain regions
- Influences of Histamine H_1 Receptor Antagonists on Maximal Electroshock Seizure in Infant Rats(Pharmacology)
- Epileptogenic Activity of Methicillin-Resistant Staphylococcus aureus (MRSA) Antibiotics in Rats(Pharmacology)
- IP-MAC : A Distributed MAC for Spatial Reuse in Wireless Networks
- A High Throughput On-Demand Routing Protocol for Multirate Ad Hoc Wireless Networks
- Recent Development of Pediatric Surgery and Establishment of a Medical College in Bangladesh(Special Lecture II,Share Smiles with Sick Children, Dreams and Innovation for Pediatric Surgery)
- Structural Characterization and Cytolytic Activity of a Potent Antimicrobial Motif in Longicin, a Defensin-Like Peptide in the Tick Haemaphysalis longicornis
- Financial Anxieties of Large, Medium and Small Enterprises in japan
- Department of Economics, Kyoto Gakuen University
- Growth Analysis, Yield and Canopy Structure in Maize-mungbean Intercropping
- Theoretical Investigation of Electric and Magnetic Properties of Benzene-Vanadium Sandwich Complex Chain
- Improvement of Mobility on Ultra-thin Body SOI MOSFETs by Use of High Pressure Hydrogen Annealing
- Pretreatment with Antioxidants Decreases the Effects of Salt Stress on Chloroplast Ultrastructure in Rice Leaf Segments (Oryza sativa L.)(Crop Morphology)(Crop Physiology and Ecology)
- Ion Transfer of Mixed Tetraalkylammonium Cations at an Interface between Aqueous and 1, 2-Dichloroethane phases
- Ab Initio Calculations for the Substitutions of Al(OH)^-_4 and SO^_4 with Si Tetrahedra
- Age and Growth of Sillago aeolus in Okinawa Island, Japan
- Development of an Advanced Grid-Connected PV-ECS System Considering Solar Energy Estimation
- Facilitated Ion Transfer of Calcium and Barium Cations by Naphtho-15-Crown-5 across the Water|1, 2-Dichloroethane Interface.
- Facilitated Ion Transfer of Alkali Metal Cations at the Water 1, 2-Dichloroethane Interface by Naphtho-15-Crown-5
- Investigation of the Impedance Characteristic of Human Arm for Development of Robots to Cooperate with Humans
- 金融ショックによって変動する予備的需要の推定
- Manganese(III)-Catalyzed Facile Oxygenation of Some Cyclic 1,3-Dicarbonyl Compounds
- Ion-Transfers of Sodium and Potassium Cations Facilitated by Naphtho-15-crown-5 between Water and Nitrobenzene
- Pressure Effect of Manganese(III)-Based Oxidative Free-Radical Substitution of Aromatic Compounds
- Copper-free Sonogashira Coupling Reaction in Phosphonium Amino Acid Ionic Liquids
- ARSENIC REMOVAL MONITORING FROM GROUNDWATER IN A VILLAGE IN BANGLADESH WITH GUAVA METHOD
- Wood Density in Relation to Growth Rate and Tissue Proportions of Teak Grown in Bangladesh
- Theoretical Investigation of Electric and Magnetic Properties of Benzene–Vanadium Sandwich Complex Chain
- MEASURING PASSENGER CAR EQUIVALENTS FOR NONMOTORIZED VEHICLE (RICKSHAWS) AT MID-BLOCK SECTIONS
- Spatio-Temporal Quantification and Characterization of Drought Patterns in Bangladesh
- Spectral Correlation Based Blind Automatic Modulation Classification Using Symbol Rate Estimation
- Electric and Magnetic Properties of Co-filled Carbon Nanotube(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)