11242
The aqua regia extractable As concentration in soil ranged from 3 . 7 to 283 mg / kg , whereas available As varied from 18 to 639 micro g / kg , and As total concentration ranged from 16 . 3 to 579 micro g / kg dry weight in leaves and from < 0 . 1 to 36 . 8 micro g / kg dry weight in grapes .
 Chemical: As; Chemical: As; Chemical: As
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: As; Chemical: As; Chemical: As