{"id":3783,"date":"2025-07-28T14:23:55","date_gmt":"2025-07-28T06:23:55","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3783"},"modified":"2025-07-28T14:23:55","modified_gmt":"2025-07-28T06:23:55","slug":"determination-of-lead-in-aluminum-alloys-flame-atomic-absorption-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/id\/applications\/determination-of-lead-in-aluminum-alloys-flame-atomic-absorption-spectrometry","title":{"rendered":"Penentuan Timbal dalam Paduan Aluminium – Spektrometri Penyerapan Atom Api"},"content":{"rendered":"

1. Gambaran Umum Metode<\/h2>\n
Cerna basah: Larutkan sampel dengan asam klorida, asam nitrat, dan hidrogen peroksida. Tentukan timbal pada panjang gelombang 283,3 nm menggunakan api netral udara-asetilena.<\/div>\n
\n

2. Instrumen dan Reagen<\/h2>\n

2.1 Instrumen dan Peralatan<\/h3>\n

2.1.1 Instrumen Pengujian<\/h4>\n
\n\n\n\n\n\n\n\n
Serial No.<\/th>\nNama<\/th>\nKuantitas<\/th>\nPersyaratan Teknis<\/th>\nAksesoris<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nSpektrofotometer penyerapan atom api<\/td>\n1 set<\/td>\n<\/td>\nLampu katoda berongga timbal<\/td>\n<\/tr>\n
2<\/td>\nAcetilena<\/td>\n1 silinder<\/td>\nKemurnian \u2265 99,99%<\/td>\n<\/td>\n<\/tr>\n
3<\/td>\nKompresor udara<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.1.2 Peralatan Praperawatan<\/h4>\n
\n\n\n\n\n\n\n\n\n\n\n
Serial No.<\/th>\nNama<\/th>\nKuantitas<\/th>\nPersyaratan Teknis<\/th>\nAksesoris<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nPiring panas listrik yang dikendalikan suhu<\/td>\n1 set<\/td>\nSuhu nominal: suhu kamar ~ 300 \u2103<\/td>\n<\/td>\n<\/tr>\n
2<\/td>\nKeseimbangan elektronik<\/td>\n1 set<\/td>\nSensitivitas: 0,1 mg<\/td>\n<\/td>\n<\/tr>\n
3<\/td>\nSistem air ultramurni<\/td>\n1 set<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
4<\/td>\nMikropipet<\/td>\n1 masing-masing<\/td>\n20 \u03bcL ~ 200 \u03bcL; 100 \u03bcL ~ 1000 \u03bcL<\/td>\n<\/td>\n<\/tr>\n
5<\/td>\nKolos volumetrik<\/td>\nBeberapa<\/td>\n100 ml<\/td>\n<\/td>\n<\/tr>\n
6<\/td>\nTabung uji<\/td>\nBeberapa<\/td>\n25 ml<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

2.2 Reagen<\/h3>\n

2.2.1 Reagen<\/h4>\n
\n\n\n\n\n\n\n
Serial No.<\/th>\nNama<\/th>\nPersyaratan Teknis<\/th>\nPerkataan<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nAsam klorida<\/td>\nReagen yang dijamin<\/td>\n<\/td>\n<\/tr>\n
2<\/td>\nAsam nitrat<\/td>\nkelas MOS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3. Prosedur Operasional<\/h2>\n

3.1 Pengolahan Sampel<\/h3>\n

3.1.1 Persiapan Solusi Uji<\/h4>\n
Metode eksperimental: Timbangkan 0,25 g sampel ke dalam gelas, tambahkan 15 mL asam campuran (HCl: HNO) \u2083: H\u2082 O = 6:1:7), panas sampai benar-benar larut, dan dingin. Transfer ke botol volumetrik 100 mL, cairkan ke tanda, dan campur dengan baik. Nol dengan larutan kosong, dan menentukan pada panjang gelombang 283,3 nm menggunakan api udara-asetilena.<\/div>\n

3.1.2 Persiapan Solusi Standar<\/h4>\n
    \n
  1. Persiapan seri standar timah: Pipet secara akurat 0,0, 0,1, 0,2, 0,4, dan 0,8 mL larutan stok standar timah (1000,0 \u03bcg \/ mL) masing-masing ke dalam botol volumetrik 100 mL, cairkan ke tanda dengan (1 99) asam klorhidrat, dan campur dengan baik. Konsentrasi seri larutan ini adalah 0,0, 1,0, 2,0, 4,0, dan 8,0 \u03bcg \/ mL.<\/li>\n<\/ol>\n

    3.2 Pengujian Sampel<\/h3>\n
      \n
    1. Kondisi Pengujian Kondisi referensi untuk deteksi spektrofotometer penyerapan atom api<\/li>\n<\/ol>\n
      \n\n\n\n\n\n\n\n\n\n\n\n
      Elemen<\/th>\nMemimpin<\/th>\n<\/tr>\n<\/thead>\n
      Panjang gelombang (nm)<\/td>\n283.3<\/td>\n<\/tr>\n
      Lebar pita spektral (nm)<\/td>\n0.4<\/td>\n<\/tr>\n
      Arus lampu elemen (mA)<\/td>\n6.0<\/td>\n<\/tr>\n
      Tinggi bahan bakar (mm)<\/td>\n6<\/td>\n<\/tr>\n
      Tingkat aliran bahan bakar (mL \/ min)<\/td>\n1500<\/td>\n<\/tr>\n
      Tekanan kompresor udara (MPa)<\/td>\n0.22<\/td>\n<\/tr>\n
      Metode koreksi latar belakang<\/td>\nTidak ada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
        \n
      1. Pengujian Sampel Sesuaikan instrumen dengan keadaan kerja yang optimal, menyalakan api, menyesuaikan laju aliran bahan bakar, menguji solusi standar dan solusi sampel secara berurutan, membaca data, memasukkan berat sampel, dan memeriksa dan merekam hasilnya.<\/li>\n<\/ol>\n

        3.3 Perhitungan Hasil<\/h3>\n<\/div>\n<\/div>\n<\/div>\n
        \"\"<\/div>\n
        \n
        \n
        \n
        Di mana:<\/div>\n
        X — Kandungan timah dalam sampel, dalam miligram per kilogram (mg \/ kg);<\/div>\n
        \u03c1 — Konsentrasi massa timah dalam larutan sampel yang akan diuji, dalam mikrogram per mililiter (\u03bcg \/ mL);<\/div>\n
        \u03c1\u2080 — Konsentrasi massa timah dalam larutan kosong, dalam mikrogram per mililiter (\u03bcg \/ mL);<\/div>\n
        f — Faktor pengenceran larutan pencernaan sampel;<\/div>\n
        Di — Total volume larutan pencernaan sampel, dalam mililiter (mL);<\/div>\n
        m — Massa sampel, dalam gram (g).<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

        1. Method Overview Wet digestion: Dissolve the sample with hydrochloric acid, nitric acid, and hydrogen peroxide. Determine lead at a wavelength of 283.3 nm using an air-acetylene neutral flame. 2. Instruments and Reagents 2.1 Instruments and Equipment 2.1.1 Testing Instruments Serial No. Name Quantity Technical Requirements Accessories 1 Flame atomic absorption spectrophotometer 1 set Lead […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81,36],"tags":[],"class_list":["post-3783","post","type-post","status-publish","format-standard","hentry","category-petrochemical-and-chemical","category-applications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts\/3783","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/comments?post=3783"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts\/3783\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/media?parent=3783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/categories?post=3783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/tags?post=3783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}