8/10/2019 k thut v c t - kh kt hp.pptx
1/14
LOGO
Add your company slogan
MN LY MU V X L MU
K thut v cho kh - t
kt hpGVHD : Hong ThKim Khuyn
Sinh Vin : Phm Bo QuMSSV : 11050991
TRNG I HC CNG NGHIP TP.H CH MINHKHOA CNG NGH
HA HC
8/10/2019 k thut v c t - kh kt hp.pptx
2/14
www.themegallery.com
Ni dung
Nguyn tc chung
1
Cch thc hin v mt s v d
2
3
u im4
Khi nimxl mu
Nhc im,phmvi ngdng5
8/10/2019 k thut v c t - kh kt hp.pptx
3/14
www.themegallery.com
Khi nimxl mu
Xl mul qu trnh chuynmuthnh dngc thphntch c bng phng php thch hp
C hai qu trnh xy ra ng thiPh hu cu trc ban u mu (digestion ofSample Matrix)
Ho tan gii phng cht cn xc nh v dngdung dch ng th
8/10/2019 k thut v c t - kh kt hp.pptx
4/14
Cc k thut x l mu
www.themegallery.com
1
2
3
4
5
K thut v c ho t (x l t)
K thut v c ho kh (x l kh)
K thut v c ho kh - t kt hp
K thut chit (lng-lng, rn-lng, rn-kh...)
Cc k thut sc k...
8/10/2019 k thut v c t - kh kt hp.pptx
5/14
www.themegallery.com
K thut v c hokh - t kt hp
8/10/2019 k thut v c t - kh kt hp.pptx
6/14
Nguyn tc chung
www.themegallery.com
Mu c phn hu trong chn hay cc nung
Lng axt dng x l thng tn ch bng 1/3 hay 1/4lng cn dng cho x l t t tn axt tinh khit.
x l t s b trongcc hay chn nung
bng mt lng nh
axt v cht ph gia
em nung
nhit thchhp
Ho tan
tro mu
8/10/2019 k thut v c t - kh kt hp.pptx
7/14
X l mu rau qu xc nh cc kim loi (Na, K, Ca, Cd, Co, Cr,Cu, Fe, Mn, Ni, Pb, Zn)
V d
Cn 5g mu nghin mn
5 mL HNO3 45% 5 mL Mg(NO3)2 5%
sy, hay un nh n khi khthnh than en
dn
lc u 400-450 oC (3h)
ri nng ln550oC
n htthan en
Ho tan
tro
nung
thm 1mL HNO3
65%,
un nng
cho tan
bay hi ht
axit d
nh mc bng dd
HCl 2% thnh 25 mL
20 mL dd
HCl 1/1
8/10/2019 k thut v c t - kh kt hp.pptx
8/14
V dX l mu sa xc nh cc kim loi (Na, K, Ca, Mg, Cd, Co, Cr,Cu, Fe, Mn, Ni, Pb, Zn)
Cn 5g mu nghin mn
5 mL HNO3 45% 2 mL H2SO4 98%5 mL Mg(NO3)2 5% ( hay
KNO3)
n khi kh vthnh than en
dn
sy
lc u 400-
450o
C (3h)
ri nng ln
550o
C
n ht
than en
nung
Ho tan
tro thm 1
mL HNO365%,
un nngcho tan
18 mL dd
HCl 1/1
bay hi ht
axit d
nh mc bng ddHCl 2% thnh 25 mL
8/10/2019 k thut v c t - kh kt hp.pptx
9/14www.themegallery.com
V dX l mu tm, cua, c,.. xc nh cc kim loi (Na, K, Ca, Mg,Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn)
Cn 5g mu nghin mn
n khi kh vthnh than en
dn
sy
lc u 400-
450o
C (3h)
ri nng ln
550o
C
n ht
than en
nung
Ho tan
tro thm 1
mL HNO365%,
un nngcho tan
18 mL dd
HCl 1/1
bay hi ht
axit d
nh mc bng ddHCl 2% thnh 25 mL
3ml Mg(NO3)2 5%8 mL H2SO4 75%
8/10/2019 k thut v c t - kh kt hp.pptx
10/14
uim
Kthutv cho kht kt hp th x l
t ban u l bov mt s nguyn t
cho x l kh tip theokhng b mt, khngphi ui lng axt d
lu hn ch snhim bn.
Kthutv cho kh c thlmmtmtschtdbay hi, nukhng thm chtphgia
Kthutv cho t phi uilng axt d lu sau khi x lmu gy nhim bn mu
Cch ny thch hp cho cc mu c nn (matrix) l cht huc, nh rau qu, thc phm,.., x l xc nh cc kim loi v mts phi kim hoc nhng phng th nghim khng c thit b l vi sng.
8/10/2019 k thut v c t - kh kt hp.pptx
11/14
uim
Xl kh - t kt hp u vit hn so vi x l t
S tro ho trit , sau khi ho tan tro cn li c
dung dch mu trong. Khng phi dng nhiu axit tinh khit cao tnkm.
Thi gian x l nhanh hn tro ho t.
Kh tkt hp
x l t Thi gian phn hu ko di Lng axt dng ho mu nhiu
8/10/2019 k thut v c t - kh kt hp.pptx
12/14
Nhc im phm vi ng dng
www.themegallery.com
ng dng ch yu x l mu cho phn tch ccnguyn t kim loi v mt s anin v c, nh Cl-, Br-
, SO42-, PO43-,..trong cc loi mu sinh hc, mu mitrng, mu hu c v v c.
Nhc im:khng dng c cho x l mu xc nh cc cht hu c
8/10/2019 k thut v c t - kh kt hp.pptx
13/14
Ti liu tham kho
www.themegallery.com
1. Ha hc phn tch- Nguyn Tinh Dung- Nh xut bn gio dc
2. Ha hc Phn tch nh lng- Bi Long Bin- Nh xut bn khoa hcV k thut
3. Gio trnh Ly mu v x l mu phn tch-i hc Cng nghip thnhph H Ch Ming
8/10/2019 k thut v c t - kh kt hp.pptx
14/14
LOGO
Add your company slogan
www.themegallery.com
Top Related