Extra elements detection in organic compounds by nonbreakable sodium ignition apparatus (NOSIA)

Figures & data

Scheme 1. Detection of nitrogen.

Scheme 2. Detection of sulfur.

Figure 1. NOSIA stopper unit.

Figure 2. NOSIA operational setup.

Table 1. Comparative costs incurred with non-NOSIA and NOSIA for sodium extract preparation per student and per batch of 40 students for solid samples.

Items	Non-NOSIA per student	Material use per lab section	NOSIA per student	Material use per lab section	Saving %
Sodium metal	0.32 g	12.8 g	0.05 g	1.6 g	87.7
Organic compound	0.40 g	16.0 g	0.05 g	1.6 g	90.0
Glass material	16 g	640 g	0	0	100.0
Filter paper	100 cm^2	40	0	0	100.0
Funnel	1	40	0	0	100.0
Biogas for heating	0.1 kg m^−3	0.1 × 8 × 40 = 32 kg m^−3	0.1 kg m^−3	0.1 × 40 = 8.0 kg m^−3	75.0
Water	2 L	80 L	500 mL	20 mL	75.0
Electricity	64 units	64 units	20 units	20 units	68.8
Cleaning of filter unit	2 L water	80 L water	0	0	100.0
NOSIA cleaning	2 L water	80 L water	1 L water	40 L water	50.0

Table 2. Comparative costs incurred with non-NOSIA and NOSIA for sodium extract preparation per student and per batch of 40 students for volatile liquid samples.

Items	Non-NOSIA per student	Material use per lab section	NOSIA per student	Material use per lab section	Saving %
Sodium metal	0.32 g	12.8 g	0.05 g	1.6 g	87.7
Volatile liquid	1.60 mL	64 mL	0.10 mL	4.0 mL	93.0
Glass material	16 g	640 g	0	0	100.0
Filter paper	100 cm^2	40	0	0	100.0
Funnel	1	40	0	0	100.0
Biogas for heating	0.1 kg m^−3	0.1 × 8 × 40 = 32 kg m^−3	0.1 kg m^−3	0.1 × 40 = 8.0 kg m^−3	75.0
Water	2 L	80 L	500 mL	20 mL	75.0
Electricity	64 units	64 units	20 units	20 units	68.8
Cleaning of filter unit	2 L water	80 L water	0	0	100.0
NOSIA cleaning	2 L water	80 L water	1 L water	40 L water	50.0