A low-cost biosorbent-based coating for the highly sensitive determination of organochlorine pesticides by solid-phase microextraction and gas chromatography-electron capture detection.

In this study, an environmentally friendly and low-cost biosorbent coating was evaluated, for the first time, as the extraction phase for solid-phase microextraction (SPME) supported on a nitinol alloy. The characterization of the new fiber was performed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The applicability of the biosorbent-based fiber in the determination of δ-hexachlorocyclohexane, aldrin, heptachlor epoxide, α-endosulfan, endrin and 4,4'-DDD in water samples was verified, with separation/detection by gas chromatography coupled to electron capture detection (GC-ECD).

Enhancing postnatal perineal care: Part 2.

Maternal physical and psychological wellbeing during the postnatal period can be significantly impaired by perineal trauma sustained during childbirth. Current literature emphasises preventative measures, yet there is a lack of a systematic, evidence based approach to postnatal perineal care. This is concerning as the eighth 'Saving mothers' lives' report (CMACE 2011) identifies genital tract sepsis for the first time as the leading cause of maternal deaths.

Enhancing postnatal perineal care.

Maternal physical and psychological wellbeing during the postnatal period can be significantly impaired by perineal trauma sustained during childbirth. Current literature emphasises preventative measures, yet there is a lack of a systematic, evidence based approach to postnatal perineal care. This is concerning as the eighth 'Saving mothers' lives' report (CMACE 2011) identifies genital tract sepsis for the first time as the leading cause of maternal deaths.

Genotoxicity of swine effluents.

This study aimed at the investigation of genotoxic effects of swine effluents from different stages of a treatment system for swine wastes through bioassay of stamen hairs and micronuclei in Tradescantia (clone BNL 4430). No significant differences (p≥0.05) regarding the genic mutations were found in the bioassay of stamen hairs, independently of the effluent analysed.

Remediation of coal mining wastewaters using chitosan microspheres.

This study aimed to evaluate the potential use of chitosan and chitosan/poly(vinylalcohol) microspheres incorporating with tetrasulphonated copper (II) phthalocyanine (CTS/PVA/TCP) in the remediation of coal mining wastewaters. The process was monitored by toxicity tests both before and after adsorption treatments with chitosan and microspheres. Physicochemical parameters, including pH and trace-metal concentration, as well as bioindicators of water pollution were used to that end.