Non-target analysis of organic pollutants in oil-production wastewater treatment stations and surrounding soils: Their profiles, electro-transformation, and environmental risks.

Although pollution during crude oil production has been paid attention, there is lack of studies on organic pollutants generated/emitted from oil-production wastewater (OPW) treatment processes, especially advanced oxidation process. Based on GC-Q-Orbitrap-HRMS, the present study performed non-target analysis of volatile/semi-volatile organic compounds in physical and electro-oxidation units of OPW treatment stations located in Shengli Oilfield of China. Overall, 64-227 organic compounds were respectively identified in different units, and electro-oxidation was found elevating (by 2.

Profiles, exposure assessment and expanded screening of PAHs and their derivatives in one petroleum refinery facility of China.

This study investigated environmental distribution and human exposure of polycyclic aromatic hydrocarbons (PAHs) and their derivatives in one Chinese petroleum refinery facility. It was found that, following with high concentrations of 16 EPA PAHs (∑Parent-PAHs) in smelting subarea of studied petroleum refinery facility, total derivatives of PAHs [named as XPAHs, including nitro PAHs (NPAHs), chlorinated PAHs (Cl-PAHs), and brominated PAHs (Br-PAHs)] in gas (mean= 1.57 × 10 ng/m), total suspended particulate (TSP) (mean= 4.

A dual-function [Ru(bpy)] encapsulated metal organic framework for ratiometric Al detection and anticounterfeiting application.

In this work, a novel composite material (HPU-24@Ru) has been prepared by combining a blue-emission Cd-based metal-organic framework (MOF, [Cd(TCPE)(DMF)(HO)], HPU-24) with a red-emission tris (2,2'-bipyridine) dichlororuthenium(II) hexahydrate ([Ru(bpy)]) molecule for ratiometric fluorescence sensing of Al ions in aqueous medium and high-level dynamic anticounterfeiting application. The luminescence measurement results indicated that the fluorescence intensity of HPU-24 at 446 nm showed a red shift in the presence of Al ions, and the new peak appeared at 480 nm and continued to increase with an increase in Al ion concentration. Meanwhile, the fluorescence intensity of [Ru(bpy)] almost showed no change.

Heterologous Expression and Characterization of an Acidic GH11 Family Xylanase from Hypocrea orientalis.

A gene encoding glycoside hydrolase family 11 xylanase (HoXyn11B) from Hypocrea orientalis EU7-22 was expressed in Pichia pastoris with a high activity (413 IU/ml). HoXyn11B was partly N-glycosylated and appeared two protein bands (19-29 kDa) on SDS-PAGE. The recombinant enzyme exhibited optimal activity at pH 4.