11219
Effect of major cations ( Ca ( 2 + ) , Mg ( 2 + ) , Na ( + ) , K ( + ) ) and anions ( SO 42 - , Cl ( - ) , NO 3 - ) on Ni accumulation and toxicity in aquatic plant ( Lemna minor L . ) : implications For Ni risk assessment .
 Chemical: Ca ( 2 + ); Chemical: Mg ( 2 + ); Chemical: Na ( + ); Chemical: K ( + ); Chemical: SO 42 -; Chemical: Cl ( - ); Chemical: NO 3 -; Chemical: Ni; Chemical: Ni
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: Ca ( 2 + ); Chemical: Mg ( 2 + ); Chemical: Na ( + ); Chemical: K ( + ); Chemical: SO 42 -; Chemical: Cl ( - ); Chemical: NO 3 -; Chemical: Ni; Chemical: Ni