Microwave-Assisted Digestion Using Dilute Nitric Acid and Hydrogen Peroxide for Multielement Determination in Wheat Flour by ICP-MS

Table 4

Elements determined in the Al-Qassim wheat samples, showing minimum, maximum, and mean concentrations (mg kg⁻¹).

Samples	Mg	K	Ca	Al	Mn	Fe	Cu	Zn	Se	Rb	V	Cd	As
Al Badaye	2033	4771	691	45.5	28.0	36.9	14.5	53.6	0.5	6.3	0.08	0.016	0.016
Maragan	2234	4741	578	83.0	34.4	61.4	12.3	44.1	0.5	5.2	0.17	0.02	0.020
Solobiah	1775	4599	797	44.4	43.2	27.2	11.3	27.8	0.2	2.7	0.05	0.01	0.027
Riyadh Khabra	2229	5243	628	35.3	28.5	33.5	13.6	55.8	0.6	6.7	0.06	0.01	0.018
Al Fawarah	2536	5266	471	67.1	40.4	43.5	13.3	39.4	0.5	4.9	0.12	0.03	0.019
Al Shihiah	2362	5274	603	11.3	42.2	22.3	8.8	23.4	0.1	7.6	0.02	0.03	0.006
Al Bukayriah	2253	4468	657	23.5	55.2	37.2	9.9	27.5	0.6	1.8	0.04	0.03	0.007
Al Fowalig	2196	4433	584	27.1	27.2	22.8	12.3	41.0	0.2	11.8	0.03	0.02	0.01
Buraydah	2474	5419	657	33.3	53.0	32.1	11.9	44.2	01	4.1	0.04	0.03	0.004
Al Mithnab	2366	5524	619	14.1	40.0	26.7	9.0	25.4	0.2	12.3	0.03	0.02	0.004
Al Rass	2429	4870	499	19.9	30.0	31.4	7.2	25.8	0.2	6.4	0.03	0.01	0.005
Al-qara’a	2181	6063	878	25	31.3	26.0	13	37	0.20	5.40	0.05	0.03	0.018
Max	2536	6063	878	83	55.2	61.4	14.5	55.8	0.6	12.3	0.17	0.03	0.027
Min	1775	4433	471	11.3	27.2	22.3	8.8	25.4	0.1	1.8	0.02	0.01	0.004
Max-min	761	1630	407	71.7	28	39.1	5.7	30.4	0.5	10.5	0.15	0.02	0.023
Mean	2255.66	5055.9	638.5	35.79	37.78	33.41	11.04	37.08	0.40	6.26	0.06	0.021	0.013