A series of aluminum alkyl complexes nacnacRAlMe2 (2a-2h) bearing aliphatic N-substituted β-diketiminate ligands (nacnacRH = N,N'-dialkyl-2-amino-4-iminopent-2-enes), were prepared from the reaction of trialkyl aluminum and the corresponding β-diketimines. All these aluminum complexes were characterized by NMR, elemental analysis and HRMS spectroscopy. The molecular structures of complexes 2a, ...

A worker with occupational exposure to aluminum powder developed asthmatic symptoms three years and six months after starting work. Skin tests (prick and intradermal) to aluminum chloride (AlCl3) were negative. Inhalation challenge test with 10 mg of aluminum powder and 10 mg/ml of AlCl3 solution induced an early asthmatic response. Sodium cromoglycate pre-treatment reduced AlCl3-induced bronch...

background: aluminum phosphide (alp) or rice tablet is a common agent used as pesticides. it is cheap, widely available and highly toxic and responsible for many cases of poisoning in the agricultural communities. there is limited evidence about change of liver enzymes in patients with alp poisoning in this region. therefore, we decided to evaluate alteration of liver enzymes in alp poisoning i...

background: accumulation or deficiency of trace elements can occur in hemodialysis patients and it increases risk of cardiovascular or other organs disorders. special ions levels such as sodium and bicarbonate in dialysis fluid are accurately regulated but the remaining elements are not regularly measured. aluminum and lead belong to the biologic performance free heavy metals .they also has a t...

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The paper presents the new HPLC-ICP-MS method used for conducting speciation analysis of aluminum as free Al(3+) and aluminum fluoride complexes during one analysis. In the study, 5% HNO3 was used as a derivative reagent in order to minimize the possibility of clogging the torch in ICP-MS. Using the new HPLC-ICP-MS method, speciation analysis of aluminum and aluminum fluoride complexes was cond...

Aluminum present in a beverages can affect the taste. This application note describes the determination of aluminum in beverages using an Agilent 4100 MP-AES. Beverages contain a variety of matrix constituents, including salt, sugar, and alcohol. A study was performed to determine how these matrix constituents affect aluminum measurements, and what could be done to reduce such effects. It was d...

Several low oxidation state aluminum-containing cluster anions, LAlH- and LAln- (n = 2-4, L = N[Si(Me)3]2), were produced via reactions between aluminum hydride cluster anions, AlxHy-, and hexamethyldisilazane (HMDS). These clusters were characterized by mass spectrometry, anion photoelectron spectroscopy, and density functional theory (DFT) based calculations. Agreement between the experimenta...

Automobiles are required to be even lighter for further achieving environmental protection through fuel economy improvement, as well as safety feature enhancement and drivability improvement. Automotive suspensions are also required to reduce their weight and thus more aluminum is being adopted. Aluminum forgings, in particular, are often applied because of their significant weight reduction ef...

Aluminum, a non-redox-active metal is, nevertheless, a pro-oxidant both in in vitro preparations and in vivo. It facilitates both superoxide- and iron-driven biological oxidation by mechanisms that remain to be resolved. More than 10 years ago Fridovich and colleagues suggested that the facilitation of superoxide-driven biological oxidation by aluminum was due to an interaction between the meta...