Trypsin Digestion Pretreatment of Kelp Samples and the Iodine Speciation Analysis of Iodate, Iodide, MIT, and DIT by HPLC-ICP-MS

Table 3

Results of recoveries and real sample analysis.

	Content of iodine^a(μg L^−1)		Spiked (μg L^−1)		Found^a (μg L^−1)		Recoveries (%)
	I^−	MIT	I^−	MIT	I^−	MIT	I^−	MIT
Trypsin	3159.21	156.36	1000.00	100.00	4148.01	258.70	98.88	102.34
Pancreatin	3522.03	—^b	1000.00	100.00	4518.33	99.52	99.63	99.52
Protamex	2743.01	77.27	1000.00	100.00	3750.51	176.97	100.75	99.70
Neutral protease	2931.74	—^b	1000.00	100.00	3953.94	102.22	102.22	102.22

^aDirect determining data by HPLC-ICP-MS. ^bNot detected.