ion analysis?

65 ⤊

why is that solutions for ion analysis, especially dilute solutions, should always be stored and measured in plastic, rather than glass containers

2006-09-26 05:16:36 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

Plastic will not interact with any common ions.

Some glass can, but this is rare even with silica glass. Diffusion of ions into and out of glass is a slow process.

Just to be safe, for the most sensitive tests with dilute solutions, plastic is usually used.

2006-09-26 05:22:16 · answer #1 · answered by Richard 7 · 65⤊ 0⤋

Glass contains many cations in the silicate interstices which can leach out into the water.

2006-09-26 12:19:35 · answer #2 · answered by Richard 7 · 0⤊ 0⤋

plastic for accuracy

2006-09-26 14:18:30 · answer #3 · answered by Anonymous · 0⤊ 0⤋