Table 3.

The most common and most advanced technology for the detection of sulfur dioxide contaminants.

Testing Item	Technology of Detecting Seaweeds	Advantages	Limitations	References
Sulfur dioxide	Miniaturized dielectric barrier discharge—molecular emission spectrometry	Good linear relationship, accurate detection results, low cost, compact detection equipment	Detection time is long, instrument is complex and expensive	[102]
	Liquid chromatography with pre-column derivatization	Short detection time, high sensitivity, and specificity	Consider using HPLC rather than LC	[107,108]
	Electrospray mass spectrometry	Distinguish organic and inorganic arsenic	Intolerant to complex matrix and high salt	[94,97]