申请人:——
公开号:US20040248313A1
公开(公告)日:2004-12-09
There is provided a method for producing a sampling tube for carbonyl compound, manifesting low blank value and enabling analysis of carbonyl compounds such as formaldehyde and the like in air or in water with high sensitivity and high accuracy by a simple manner, which comprises the following steps:
contacting a cation exchanger packed in a tube with a hydrophilic solvent or a mixed solvent containing this;
contacting the cation exchanger contacted with a hydrophilic solvent or a mixed solvent containing this with a solution of a compound of the following structural formula (1):
1
[in the formula, R
1
, R
2
, R
3
, R
4
and R
5
each independently represent a hydrogen atom, halogen atom, alkyl group, haloalkyl group, alkoxyl group, haloalkoxyl group, aryl group or haloaryl group, and R
6
and R
7
represent a hydrogen atom or alkyl group (wherein, when R
6
and R
7
represent a hydrogen atom, at least one of R
1
, R
2
, R
3
, R
4
and R
5
is not a fluorine atom)] or a salt thereof, to allow the cation exchanger to support the compound; and
washing the cation exchanger supporting the compound with a hydrophilic solvent or a mixed solvent containing this two or more times.
本发明提供了一种用于生产羰基化合物采样管的方法,该采样管空白值低,能以简单的方式对空气或水中的甲醛等羰基化合物进行高灵敏度和高精度的分析,该方法包括以下步骤:
将装在管中的阳离子交换器与亲水性溶剂或含有亲水性溶剂的混合溶剂接触;
将与亲水性溶剂或含有亲水性溶剂的混合溶剂接触的阳离子交换器与下列结构式(1)的化合物溶液接触:
1
式中,R
1
, R
2
, R
3
, R
4
和 R
5
各自独立地代表氢原子、卤素原子、烷基、卤代烷基、烷氧基、卤代烷氧基、芳基或卤代芳基,以及 R 6
6
和 R
7
代表氢原子或烷基(其中,当 R
6
和 R
7
代表氢原子时,R
1
, R
2
, R
3
, R
4
和 R
5
或其盐,使阳离子交换剂能够支持该化合物;以及
用亲水性溶剂或含有亲水性溶剂的混合溶剂洗涤支撑化合物的阳离子交换剂两次或两次以上。