 A successful test for beryllium in air and on surfaces has been recently developed and published as an international voluntary consensus standard ASTM D7202 . The procedure uses dilute ammonium bifluoride for dissolution and fluorescence detection with beryllium bound to sulfonated hydroxybenzoquinoline , allowing up to 100 times more sensitive detection than the recommended limit for beryllium concentration in the workplace . Fluorescence increases with increasing beryllium concentration . The new procedure has been successfully tested on a variety of surfaces and is effective for the dissolution and ultratrace detection of refractory beryllium oxide and siliceous beryllium ( ASTM D7458 ) . 
