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A preconcentration method was developed by using a new aminothioazole - containing sulfonamide resin in solid phase extraction for the determination of lead and nickel in milk and yoghurt samples .
 Chemical: aminothioazole; Chemical: sulfonamide; Chemical: nickel
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: aminothioazole; Chemical: sulfonamide; Chemical: nickel