Standatsed 8-60 ml EPA isampula vials yokuqapha imvelo ethembekile

1. Isizinda nokubaluleka
   Ekuqapheni kwezemvelo, ukumiswa kwe-8-60 ml-Certified Glas Vials (amabhodlela e-VOA) yiziqukathi zokuqoqa ama-Vocs, amasampula wamanzi, kanye nokukhishwa kwenhlabathi. Kwenziwe ngohlobo lwebanga eliphakeme ngifaka ingilazi ye-PTFE Kusetshenziswa ama-via ahlanziwe kwangaphambili, acacile noma amber Voial ahlangabezana namazinga e-EPA ekhishwe phansi anciphisa ukuhlukahluka kwelebhu kanye nokukhulisa ukuvikela idatha.

2. Izindlela zokusampula nezokulondolozwa
   a. Ukuqoqwa Kwensimu
    Mina. Sebenzisa ilebula elibhalwe ngaphambili, ama-vials ahlanziwe ngaphambi kokungena kwekhanda.
    II. Gcwalisa i-Site ngandlela per ka-EPA 5035 (AKUKHO igebe lomoya).
    III. Gqoka amagilavu ​​futhi usebenzise amathuluzi azinikezele ukugwema ukungcoliswa.
   b. Ukulondoloza
    Mina. Faka ukugcinwa okucacisiwe (isb.
    II. Qinisa i-cap ukucindezela uSestum ngokumelene nesampula, ukukhiya ekuhlaziyweni.
   c. EzokuThutha Nesitoreji
    Mina. Gcina ngo-4 ° C ebumnyameni; Ezokuhamba ezintabeni ezifakiwe ezinamaphakethe eqhwa.
    II. Gcina i-ID ye-vial eyingqayizivele kulo lonke uchungechunge lokugcinwa.
    III. Hlangana nezikhathi ze-EPA Holding Times (E.G., Vocs ≤ 14 izinsuku).
   d. Irisidi le-Lab & Ukuhlaziywa
    Mina. Hlola ubuqotho be-vial; Ama-ID we-Log wokulandela umkhondo.
    II. Hlaziya ngqo (e.g., Headspace GC) noma udlulise ngokuphatha okuncane.

3. Isitsha sokuqukethwe nokuqina kwesampula
   a. Thayipha ngifaka ingilazi
    Mina. ≥ 80% we-sio₂-high thermal-shove ukumelana ne-acid \ isisekelo seasertness.
    II. Ayiveli i-alkaline ions.
    III. Izinguqulo ze-Amber zivikela ukuhlaziya okubucayi okukhanyayo.
   b. Ingilazi ye-Soda-lime (ayinconywa)
    Mina. Okuqukethwe okuphezulu kwe-alkali kungavutha amasampula acidical, imiphumela yokuyekethisa.

4. Izidingo Zokulawula Nokuhambisana
   a. Ukucaciswa Kwendlela ye-EPA
    Mina. Indlela 5035A (SW-846): Izimbiza ezingama-60 ml septum noma ama-40 ml ptfe-lid screw-cap vials for vocs yenhlabathi.
    II. Indlela ye-1631: Landzelela ukuhlaziywa kweMercury kudinga i-FEP \ PFA-lined noma thayipha iziqukathi zengilazi.
    III. Izindlela ezingama-524.2 & 5021A: Amber BorosiLite Voa vials ngePtfe \ abicone septa.
    IV. I-40 CFR 136: Iziqukathi ezivunyiwe kufanele zilethe <50 PPB TOC kanye nama-leaaker wensimbi angalungile.
   b. Ukuqinisekiswa kokusebenza
    Mina. I-VOA VIALS ngaphansi kwendlela 5035A izuze ukululama okungu-95% VOC.
    II. I-FEP \ I-PFA-lined caps ikhombise ukufakwa kwensimbi okubalulekile ngisho nakuma-acid aqinile.

5. Design cap design & imikhuba ehlanganisiwe yesampula
   a. Ukukhetha kweCAP & Septa
    Mina. I-PTFE \ a Silicone Septa ngaphansi kwama-Phenolic noma ama-CAPS epulasitiki avimbela ukulahleka kwe-VOC.
    II. I-FEP \ PFA-lined caps yamasampula anolaka (ama-acid aqinile \ oxidizers).
    III. Qinisekisa ukuthi wonke ama-cap avuza ubufakazi obuvuzayo, i-inert, ne-ePA-ehambisana.
   b. Izixazululo ezihlanganisiwe zesampula
    Mina. Ukuhamba komsebenzi okuma-munye (SW-846 5035): Ama-vials alungiselelwe ama-lab agcwaliswe esizeni futhi abuyiselwe ukuqondisa okuqondile-kanye nesicupho.
    II. Ukugcwalisa okuqondile & seal kunciphisa izinyathelo zokudlulisa, kunciphisa ubungozi bokungcola.
    III. Amadivayisi wenhlabathi Condering alayisha amasampula amaningi ngqo kuma-VOA VIALS aqhubeka nokusika ukulahleka.

6. Ukugcina
   Ukusuka kuqoqo lensimu ngokusebenzisa ukuhlaziya kwelebhu, kuqashwa ngohlobo lwe-EPA-Certified 8-60 ml ngifaka ubuchwepheshe be-VOA VIALS-NOKUFUNDA KOKUFUNDA KOKUXHUMANA KAKHULU, Ukulandela umkhondo. Iziqukathi ezijwayelekile kanye nokuhamba komsebenzi kunciphisa ukuhlukahluka kweLab-Lab, ukuletha idatha ethembekile yezemvelo, ebonakalayo.

Izenzo ezibalulekile

• Sebenzisa i-Voials ehlanziwe ngaphambi kokuhlanzwa, ama-headpace-free voa esizeni ngamagilavu ​​namathuluzi azinikezele.

• Faka ama-vervatives anqunyelwe bese uqinisa i-PTFE \ aircane septa cap ngokushesha.

• Gcina ngo-4 ° C ebumnyameni; ezokuthutha ezitsheni ezipholile, ezifakiwe.

• Hlola ama-vials nama-ID we-log ngaphambi kokuhlaziywa; Run Direct Headspace GC noma ukudluliselwa okunomthelela ophansi.

• Khetha uhlobo ingilazi ngifaka ingilazi (i-amber yokubusisa okukhanyayo) ne-FFA \ pfa-lidch caps yama-matric anolaka.

• Asungule ukugeleza kokusebenza okugcwalisiwe kokugcwaliswa kokugcwaliswa kokugcwaliswa kwezinyathelo okukodwa ukuze kuncishiswe ukulahleka okubangelwe ukudluliswa.