Assessment of Essential and Toxic Mineral Elements in Bitter Gourd (Momordica Charantia) Fruit

Figures & data

Table 1 Method detection limits (MDL), accuracy and precision of the method and measured concentrations in bitter gourd samples ^a

Element	Mg	Ca	V	Cr	Mn	Co	Cu	Zn	As	Mo	Cd	Hg	Pb
MDL (μg/L)	0.235	0.658	0.009	0.147	0.05	0.03	0.024	0.024	0.07	0.09	0.04	0.009	0.005
NIST 1572 Certified value (mg/kg)	5800 ± 300	31500 ± 1000	N/A	0.8 ± 0.2	23 ± 2	N/A	16.5 ± 1	29 ± 2	3.1 ± 0.3	0.17 ± 0.09	0.03 ± 0.01	0.08 ± 0.02	13.3 ± 2.4
Measured value	5672 ± 271	31338 ± 986		0.77 ± 0.17	24 ± 1.52		15.8 ± 1.24	30 ± 1.87	2.8 ± 0.24	0.16 ± 0.1	0.027 ± .0009	0.078 ±  0.017	12.8 ± 1.97
Accuracy (%)	98	99		96	93	109	104	102	98	99	98	90	96
Intraday precision (CV%)	3.3	3		2.5	2.6	2.9	2.6	4	3.3	3.1	3.4	1.3	2.7
Interday precision(CV%)	5.6	5.5		4.7	6.2	5.9	5.7	6.7	4.7	3.9	4.4	4.3	4.2
NIST 1640 Certified value (μg/kg)	5819 ± 56	7045 ± 89	12.99 ± 0.37	38.6 ± 1.6	121.5 ± 1.1	20.28 ± 0.31	85.2 ± 1.2	53.2 ± 1.1	26.67 ± 0.41	46.75 ± 0.26	22.79 ± 0.96	N/A	27.89 ± 0.14
Measured value in 10 times diluted sample	587.5 ± 20	702 ± 0.84	1.22 ± 0.19	4.08 ± 0.33	12.56  ± 0.3	2.02 ± 0.15	8.61 ± 0.19	5.45 ± 0.3	2.06 ± 0.16	4.56 ± 0.095	2.28 ±  0.05		2.73 ± 0.11
Accuracy (%)	101	99	94	105	103	100	101	103	77	97	100		98
Intraday precision (CV%)	3.6	2.8	3.1	2.7	1.3	1.1	1.24	4.9	2	2.4	0.8		0.6
Interday precision (CV%)	4.9	3.9	5.6	5	2.4	2	2.3	5.5	3.4	3.2	2.3		3.9
Bitter gourd flesh (μg/kg)	163078 ± 37219	39027 ± 10299	5.36 ± 0.79	33.3 ± 7.3	2540 ± 929	0.16 ± 0.07	790341 ±	5035 ± 1239	n.d.	193 ± 64	n.d.	1.74 ± 0.84	10.95 ± 2.92
(mg/kg)	163 ± 37.2	39 ± 10.3			2.54 ± 0.93			5 ± 1.2
^aWet mass of flesh.