http://www.kiwiscience.com/JournalArticles/STOTEN2009.pdf

E-waste: An assessment of global production and environmental impacts

Mechanical and chemical recycling of solid plastic waste.

Environmental release and behavior of brominated flame retardants.

Histone deacetylase is a metallo-enzyme with zinc at the active site. Compounds having a zinc-binding moiety, such as, for example, a hydroxamic acid group or a carboxylic acid group, can inhibit histone deacetylase. Histone deacetylase can repress gene expression, including expression of genes related to tumor suppression. Accordingly, inhibition of histone deacetylase can provide an alternate route for treating cancer, hematological disorders, e.g., hemoglobinopathies, and genetic related metabolic disorders, e.g., cystic fibrosis and adrenoleukodystrophy.

Histone deacetylase inhibitors

Analytical and environmental aspects of the flame retardant tetrabromobisphenol-A and its derivatives.

Analysis of flame retarded polymers and recycling materials.

Extraction of brominated flame retardants from polymeric waste material using different solvents and supercritical carbon dioxide

Rapid identification of RoHS-relevant flame retardants from polymer housings by ultrasonic extraction and RP-HPLC/UV.

Different analytical procedures were developed to investigate the chemical composition of printed wiring boards. A set of 11 samples from different electronic devices were ground and prepared for ICP-AES and AAS analyses by extraction with aqua regia and microwave digestion. Several sample preparation techniques were used for the analyses by EDXRF; the best results were obtained by embedding the samples in Vaseline. Since no standard reference material is available for printed wiring boards, a model reference material was created to compare the applicability and limitations of the employed analytical techniques.

Analysis of eco-relevant elements and noble metals in printed wiring boards using AAS, ICP–AES and EDXRF

The new N,N,O ligand bis(3,5-dimethyl-4-vinylpyrazol-1-yl)-acetic acid (Hbdmvpza) (4) suitable for copolymerisation was synthesised in a multi-step synthesis starting from bis(3,5-dimethylpyrazol-1-yl)methane (1). The κ 3 -N,N,O facial coordination behaviour of 4 was verified by synthesis and characterisation of the tricarbonyl compounds [Mn(bdmvpza)(CO) 3 ] (5) and [Re(bdmvpza)(CO) 3 ] (6), the ruthenium bisphosphane complex [Ru(bdmvpza)Cl(PPh 3 ) 2 ] (7), as well as the complex (Cu(bdmvpza) 2 ] (8). Copolymerisation of 4 with methyl methacrylate (MMA) or ethylene glycol dimethacrylate (EGDMA) led to solid phases P1a, Pb and P2 with different amounts of incorporated ligand 4. Furthermore, a homopolymer H1 of ligand 4 was successfully synthesised. Copolymer-bound manganese and rhenium tricarbonyl complexes P1a-Mn, P1a-Re, P2-Mn and P2-Re have been obtained by reaction of P1a and P2 with the metal precursors [MnBr(CO) 5 ] and [ReBr(CO) 5 ], respectively. The κ 3 -N,N,O coordination of the manganese and rhenium centres was verified by IR spectroscopy and the amount of incorporated metal complex was determined by AAS or ICP-AES measurements. Treatment of the deprotonated copolymer P1a or P2 with copper(II) or iron(II) led to polymers P1a-Cu, P1a-Fe and P2-Fe. A bathochromic shift in the UV spectrum of P1a-Cu compared to the absorption maximum of the homogeneous complex 8 by 64 nm indicates copper centres with one ligand moiety bound only. AAS analysis of P1a-Fe and P2-Fe show that up to 64 % of the ligand sites can be accessed with iron(II). Furthermore, two 2-oxocarboxylato complexes [Ru(bdmvpza)(BF)(PPh 3 )] (9) (BF = benzoylformato) and [Ru(bdmvpza)(NOG)(PPh 3 )] (10) (NOG = N-oxalylglycine) have been synthesised that mimic the shape of the active sites of 2-oxoglutarate dependent iron oxygenases. The successful copolymerisation of 9 and 10 with EGDMA was proven by UV spectroscopy.

Bis(3,5-dimethyl-4-vinylpyrazol-1-yl)acetic Acid: A New Heteroscorpionate Building Block for Copolymers that Mimic the 2-His-1-carboxylate Facial Triad

Marion Wolf

Papers

Analysis of flame retarded polymers and recycling materials.

Extraction of brominated flame retardants from polymeric waste material using different solvents and supercritical carbon dioxide

Rapid identification of RoHS-relevant flame retardants from polymer housings by ultrasonic extraction and RP-HPLC/UV.

Analysis of eco-relevant elements and noble metals in printed wiring boards using AAS, ICP–AES and EDXRF

Bis(3,5-dimethyl-4-vinylpyrazol-1-yl)acetic Acid: A New Heteroscorpionate Building Block for Copolymers that Mimic the 2-His-1-carboxylate Facial Triad