This study focuses on identifying some of the heavy and toxic elements concentration in several sources of water in Diyala Governorate in Iraq, such as the Diyala River and the Khіrisan River. The samples of tap water and bottled drinking water were taken three water wells from and two companies. The elements under study were: lead, cadmium, copper and chromium. Flame atomic absorption spectroscopy has been used to determine the concentrations.
Two main methods of contact measurement of steel temperature are applied in industry: with help of disposable and multiple used thermotransducers. Reusable ones are fixed to the bottom of the graphite tip fixed directly on the reinforcement. Then they are able to measure the temperature of the graphite surface. Since it needs to even the graphite temperature and the temperature of the melt metal, the measuring takes some extra time. Therefore the thermotransducer is mounted in the metal for a long time.
Визначено критичну концентрацію міцелоутворення для водних розчинів
поліакриламіду (ПАА) та промислового продукту Сульфороканол L270/1A (70% мас.