Poly[[μ-2-(benzotriazol-1-yl)acetato-κ :': ]chlorido-(ethanol-κ)cobalt(II)].

In the title compound, [Co(CHNO)Cl(CHOH)] , the Co atoms adopt octa-hedral -CoNO and tetra-hedral CoClO coordination geometries (site symmetries and , respectively). The bridging μ-:: 2-(benzotriazol-1-yl)acetato ligands connect the octa-hedral cobalt nodes into (010) sheets and the CoCl fragments link the sheets into a tri-periodic network. The structure displays O-H⋯O hydrogen bonding and the ethanol mol-ecule is disordered over two orientations.

Risk assessment of multiple pesticide residues in : Based on a 3-year monitoring survey.

The presence of pesticide residues in has raised an extensive concern. In this paper, based on a 3-year monitoring survey, the dietary exposure risks through consumption for different population subgroups were assessed using both deterministic and semi-probabilistic approaches under the best-case and the worst-case scenarios. Among the 52 targeted pesticides, 28 different compounds were identified in the concentration range of 0.

Residue Behaviors and Degradation Dynamics of Insecticides Commonly Applied to Mushrooms from Field to Product Processing and Corresponding Risk Assessments.

Residual pesticides in mushroom have emerged as a significant concern and bring much uncertainty due to processing procedures. In this study, a modified QuEChERS sample preparation procedure and UPLC-MS/MS were used to analyze the residual levels of four commonly used pesticides in from field to product processing. The field results showed that dissipation of these targeted chemicals was consistent with the first-order kinetics, and the half-life time ranged from 20.

Simultaneous determination of six glycosidic aroma precursors in pomelo by ultra-high performance liquid chromatography-tandem mass spectrometry.

An ultra-high performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was established and validated for the simultaneous determination of six glycosidic aroma precursors in pomelo, including geraniol β-glucoside, geraniol β-primeveroside, linalool β-primeveroside, benzyl β-primeveroside, 2-phenylethyl β-primeveroside and nerolidol β-primeveroside. The results showed that the proposed method has the advantages of rapidity, high sensitivity, and good accuracy. Six glycosidic aroma precursors were effectively separated in a short run time (13 min), and the limit of detection, limit of quantification, recovery, and repeatability of analytes were 0.

[Simultaneous determination of four fluoroquinolone residues in fish by ion-pair high performance liquid chromatography].

An ion-pair high performance liquid chromatographic method with a fluorescence detector was established to determine four fluoroquinolone residues in fish. The chromatographic conditions were as follows: Waters microBondapak C18 column (3.9 mm i.

Automatic quantitative analysis of bipolysaccharide liposome by image processing method.

This paper established the extracting method and algorithm for liposome images on the basis of analyzing the form feature of liposome, and its corresponding automatic analysis software. Some algorithms, such as the logical algorithms of mathematical morphology, the grayscale-gradient co-occurrence matrix-based method and the image enhancement method of grayscale image, were used to restrain the noise effectively and increase the definition of image. The result on bipolysaccharide liposome indicates that the method increases the measuring speed and precision.