
高级质检员
Quiz
•
Education
•
University
•
Practice Problem
•
Easy
Nick Wen
Used 3+ times
FREE Resource
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92 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
样品预处理方法的选用原则有
消除干扰因素
完整保留被测组分
使被测组分浓缩,以获得更可靠的分析结果
相似相溶
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
样品预处理方法选择依据有:
样品的基体组成和性质
分析对象及其理化性质
分析目的及所选用的分析方法
试样量的多少
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
样品预处理的方法有:
提取
净化
浓缩
压缩
振摇
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
选择适当的提取方法可以把待测组分( )或( )地从样品中分离出来。
完全
部分
定量
精准
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
待测组分提取常见的方法有:
抽提法
灰化法
液液萃取法
蒸馏法
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
抽提剂的选择原则是“相似相溶”,课本上又叫( )。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
待测样品中亲脂性的组分提取可选用( )。
有机溶液
无机溶液
混合酸溶液
单一酸溶液
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