A Simple Automated Method for the Determination of Nitrate and Nitrite in Infant Formula and Milk Powder Using Sequential Injection Analysis

Table 1

Routine for determination of nitrite. V₁, V₂, R₁, S, C₁, Sy, HC₁, and D: as indicated in Figure 1. X: not relevant. R: right. L: left. A: aspirate. P: propel. DAQ: step involving data acquisition.

Step	V1	V2	Operation	Destination	Volume	Time
					(𝜇L)	(s)
1	X	R	A	Sy	2083	10
2	R1	L	A	HC1	167	1.5
3	S	L	A	HC1	83	1.5
4	R1	L	A	HC1	167	1.5
5 (DAQ)	C1	L	P	D	Empty syringe	30