недоступно на русском языке

Тезис

 Предпросмотр

ISO 15705:2002 specifies a method for the determination of the chemical oxygen demand (ST-COD) using the sealed tube method. The test is empirical and is applicable to any aqueous sample, which includes all sewage and waste waters.

The method is applicable to undiluted samples having ST-COD values up to 1 000 mg/l and a chloride concentration not exceeding 1 000 mg/l. Samples with higher ST-COD values require predilution. For samples with a low COD, the precision of the measurement will be reduced and the detection limit will be poorer.

The method oxidizes almost all types of organic compounds and most inorganic reducing agents. It has a detection limit (4,65 times the within-batch standard deviation of a blank or very low standard) of 6 mg/l for photometric detection at 600 nm, and 15 mg/l for titrimetric detection as reported by one laboratory comparing the photometric and titrimetric techniques using a commercial test kit with a range up to 1 000 mg/l.

The titrimetric part of this method is applicable to samples exhibiting an atypical colour or turbidity after the digestion stage.


Общая информация 

  • Текущий статус
     :  Published
    Дата публикации
     : 2002-11
  • Версия
     : 1
  • Технический комитет
     : ISO/TC 147/SC 2 Physical, chemical and biochemical methods
  • ICS
     :
    13.060.50 Examination of water for chemical substances

Приобрести данный стандарт

Формат Язык
PDF
Бумажный
  • CHF92

Жизненный цикл


Появились вопросы?

Ознакомьтесь с FAQ

Работа с клиентами
+41 22 749 08 88

Часы работы:
Понедельник – пятница: 09:00-12:00, 14:00-17:00 (UTC+1)

Будьте в курсе актуальных новостей ИСО

Подписывайтесь на наши новости, обзоры, а также на информацию о продуктах.

  2. Интернет-магазин
  3. Каталог стандартов
  4. МКС
  5. 13
  6. 13.060
  7. 13.060.50
  8. ISO 15705:2002