title: The vibration characterization of synthetic crystalline lead hydrogen arsenite chloride precipitates Pb2(HAsO3)Cl2-implications of solidification of As (III) and Pb (II).
abstract: The lead hydrogen arsenite chloride precipitates (Pb2(HAsO3)Cl2) are synthesized hydrothermally due to its structure trap for lead and arsenic. The synthetic precipitates have well-developed crystalline. The crystals of lead hydrogen arsenite chloride have a series of obvious IR bands at 790, 721, 645, 589 and 554 cm(-1). These bands are assigned to the Ag mode of As-O stretching vibration (790), the antisymmetric stretch of As-OH (721), Ag modes (554 and 589) and E1g (645) of the symmetric deformation (ν1 and ν3) of AsO3 unit. The Raman bands at 782, 723, 586, 559 cm(-1) are attributed to As-O stretching vibration (ν1) and the symmetric deformation (ν1 and ν3), of which the positions and assignments display in accordance with IR result. The most intense Raman band is found in 814 cm(-1) and is attributed to the Ag mode of ν1 symmetric stretching vibration of AsO3 unit, which is not active in IR. The SEM image shows that the precipitates have needle morphology.
authors.affiliation: The Key Laboratory of Solid Waste Treatment and Resource, Ministry of Education, Southwest University of Science and Technology, 621010 Mianyang, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Liu
authors.forename: Ru
authors.initials: R
authors.lastname: Jia
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
mesh_terms: D018053:Arsenites / Q000737:chemistry*; D003460:Crystallization; D006851:Hydrochloric Acid / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014732:Vibration; D014961:X-Ray Diffraction
chemical_list: D018053:Arsenites; D007854:Lead; C029891:lead chloride; C015001:arsenite; D006851:Hydrochloric Acid
keywords: Infrared spectroscopy; Lead hydrogen arsenite chloride; Raman spectroscopy