[Safety destruction of tetramethylene disulfotetramine and its medical waste].

Objective: To develop suitable methods for safety destruction of tetramethylene disulfotetramine (TETS) and the medical wastes polluted by TETS.

Methods: The chemical stability of TETS was evaluated under the conditions of acid, alkali and high temperature. TETS was treated with sodium hydroxide, hydrochloric acid, sulfuric acid and nitric acid under various treatment conditions, i.

[An improved high performance liquid chromatography method for determination of 1-hydroxypyrene in urine].

A method for determination of 1-hydroxypyrene in urine by alkaline hydrolysis and high performance liquid chromatography was improved and validated. The conjugated 1-hydroxypyrene in urine samples was decomposed by sodium hydroxide. The urinary 1-hydroxypyrene were extracted by dichloromethane, separated on reverse phase C18 and detected by fluorescence detector.

Latex allergy among construction workers.

To assess the incidence of latex allergy in construction workers, we studied all the 230 construction workers who attended our clinic between 1996 and 2000. In the 54 (23.5%) patients who reported any kind of intolerance to rubber gloves or boots, we performed both patch testing with the TRUE Test standard series and a rubber series and prick testing for latex.

Type IV allergy to rubber additives: a 10-year study of 686 cases.

Background: Rubber additives, mainly vulcanizers and antioxidants, are increasingly a cause of contact dermatitis.

Objective: The aim of the present study was to determine the frequency of type IV allergy to rubber additives.

Methods: Seven thousand patients seen during a 10-year period were evaluated.