Время чтения статьи, примерно 2 мин.
МВД СССР Норильский металлургический комбинат Центральная лаборатория Исследовательский сектор
Определение селена и теллура в полупродуктах шламового цеха. Разработка методики. Отчёт НГМК. 1949 год
ОТЧЕТ
Тема № 317 (Подтема сверхплановая )
Начальник Центральной лаборатории Венер Р. А.
Руководитель Исследовательского сектора Полякин Ю. Л.
Ответственный исполнитель Гринев А. Г.
Стоимость работы :
Начало работы 1.III.1949 г.
Конец работы 31.ХII.1949 г.
СОДЕРЖАНИЕ
1. Цель работы
2. Фотоколориметрический метод определения селена и теллура.
3. Приготовление стандартных растворов селена и теллура.
4. Построение кривых зависимости экстинкции от концентрации.
5. Определение селена и теллура при совместном их нахождении, колориметрическим методам.
6. Определение селена и теллура методом окислительного сплавления.
7. Определение селена путем отгонки с бромисто-водородной кислотой.
8. Выделение селена и теллура совместно с гидроокисью железа.
9. Влияние железа тигля на процесс восстановления теллура из раствора.
10. Определение селена и теллура методом окислительного сплавления, с содой и бертолетовой солью.
11. Определение теллура двукратным осаждением сернистым ангидридом.
12. Общая оценка методов определения селена и теллура.
13. Литература.
14. Приложение: Методика определения селена и теллура в полупродуктах шламового цеха.
Методы количественного анализа на селен и теллур в полупродуктах шламового цеха.
Цель работы
Настоящая работа имеет своей целью: дать метод массового количественного определения селена и теллура в полупродуктах шламового цеха. Работа эта была поставлена в виду отсутствия, сколько-нибудь, систематизированных литературных к практических данных о методах анализов на селен и теллур этого ряда продуктов.
Само собой разумеется, что предлагаемые методы навсегда применимы для всей гаммы полупродуктов, получаемых по ходу технологического процесса производства меди и никеля.
Литературные источники о методах анализа на селен и теллур очень бедны, однако, имеются некоторые указания /1, 2/ о фотоколориметрическом методе определения незначительных количеств селена и теллура/. Необходимость массовых анализов, незначительное содержание селена и теллура в анализируемых продуктах, это те задачи, которые разрешают фотоколориметрический метод, поэтому естественно он открывает перед нами, в данном случае, заманчивые перспективы. Исходя из намерения применить, в данном случае, фотоколориметрический метод была воспроизведена работа Шахова (1).
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Определение селена и теллура в полупродуктах шламового цеха. Разработка методики. Отчёт НГМК. 1949 год
May 5th, 2019 | 
Автор: 
МВД СССР Норильский металлургический комбинат Центральная лаборатория Исследовательский сектор
Опубликовано в рубрике 
Метки: 