Using Stock Standard Solutions - Hitachi ZA3000 Series Instruction Manual

5.2 Using Stock Standard Solutions

5.2 Using Stock Standard Solutions
Table 5-1
Set Standard
Solution
STD 1 (0 g/L)
STD 2 (25 g/L)
STD 3 (50 g/L)
STD 4 (75 g/L)
STD 5 (100 g/L)
The autosampler for ZA3000 incorporates a function for
preparing standard solution aliquots to generate a working curve
by changing the volume of injection from a single standard
solution cup (max. 3) into the graphite cuvette. In details, each
aliquot is injected into the furnace so as to meet the
concentration of the set standard and then a diluent is injected
so that the total injection volume matches the specified sample
injection volume as listed in Table 5-1.
Example of Standard Solution Aliquots preparation.
(when injecting 20 L of sample)
Concentration and Injection Volume of
Actual Standard Solution
0 g/L, 20 L
100 g/L, 5 L
100 g/L, 10 L
100 g/L, 15 L
100 g/L, 20 L
(1) Starting from the Method window, make entries in the
[Measurement Mode], [Elements], [Instrument Setup],
[Analytical Condition], [Standards Table] and [Sample
Table] windows. Note that any other than Absorbance
should be specified in Determination Mode in the Standards
Table window. For these entries, refer to Section 3.
(2) Open the [Sample Injection] tab in the [Autosampler]
window.
(a) Make your entry for [Injection Volume].
The set injection volume is to be divided for actual
injection. Therefore, an extremely small volume may
result in a poor accuracy. An appropriate injection
volume is about 20 L or more.
5 - 20
Injection Volume of
Diluent

15 L
10 L
5 L
