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P. 159

153




                       % recovery =     &             !  '  /    *.#    -    &               !        	  "   & # &0   × 100%
                                                                                                  
                                
                                                      &             !  '  /  !                   


                                
                       % recovery =    0.56    -    0.08  × 100%    = 96%
                                            
                                    0.50   

                                                                                           ,
                                         1
                   .#      ! 'L - .
    !  
 	#&6      L 
  !
	(  7 '  
	# 96%  +/  ")    
 P' /
1   (

                          P


                                                                                            R
                   9.6      $$I   W #	$8"$% "  %_	 823  #	$ !8 $	IM 	$2!L
                   "# P	  (Caution of sample preparation for residue analysis)

                        9.6.1    4 "  #	$;O $! 	"$ (Evaporation)





                                                              6
                                  	 * 

  !
( 	  "     /   
   cleanup   	  "








                   solvent  !    2*          
    *      (      5     	  "          /1 
    1

                               6/  * 
 	 H0  . 4!     
*   
  !)2 ! "5   
   (

                        9.6.2    4 "  #	$# 	U O 4 	  #U	# 	$;I;	%"   %_	  (Dehydration)


                                                             71
                                                                                                     71

                                 	  "    	 
  !
(    5          6  "  !      " 	  "   H


                                                                          )



                          Y
  "  !      " 	  "         cleanup  * '      !'L - .
                                                                              1




                   adsorbent   (   '   
   cleanup  5 5(3 (   
* 
 "  3      "
   %
                                                                                         0




                                                                            7

                                      1

                   column   
     &    , (" %  & 6/   GC



                                     	/


                                                  71

                                             1
                                 ("' 5 
  
 *(           "  !  !
( 	  "  *  % sodium  sulfate
                   anhydrous (Na SO )          sodium sulfate anhydrous  3 ' 500°C         3 %
                                                                               /
                                        +/

                                                                                                 	/
                                              1
                                     4
                                 2
                    .6/ 
1 *	( sulfur     phthalate esters  +/ !         7*   3  ! "    detector     & 6/   GC

                        9.6.3    4 "  #	$;P	 8 $3   :#P  (Washing)


                                                           ,

                                 &    
 ' %  
     &    !  .4 
&       	 H0 .4*           !   (

                                   6/
                                           /


                    ("
   %  acid   6  alkaline detergent            !   ((  " 71      8 (    (  " acetone

                        9.6.4  #	$8#!O Emulsion
                                                                                                     +/

                                 M


                                 2  
   
(  emulsion   
 
(     #  
   liquid-liquid  partitioning
                                                               +7
                                                                                                      /



                   
   
( emulsion    
  " ."  (   "
#% (    	  "   % (           !




                                                        +7

                                                            )
                       RS      %  (    organic solvent ' / %    liquid-liquid partitioning
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