Emas-198 (¹⁹⁸Au)

Data nuklida

Unsur

Emas (Au, Z = 79)

Nomor massa (A)

198

Proton (Z)

79

Neutron (N)

119

Massa atom

197.968243714 ± 0.000000579 u

Waktu paruh

2,69464 hari (± 0,0001 hari)

Mode peluruhan

Peluruhan beta minus (β⁻) ( 100 %)

Inti anak

Raksa-198 (¹⁹⁸Hg)

Tahun penemuan

1937

Sumber data

IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem

Kegunaan isotop emas

• 195Au (with a half-life of about 0.51 year) has been used to study particle movement within the lungs of rats. 198Au (with a half-life of 2.7 days) was used in a study to model gold cycling in plants. This study demonstrated that gold particles are retained by humates (organic constituents of soil), which contain fulvic acid, humic acid, ulmic acid, and lignin and would therefore be likely to accumulate in mull humus or forest litter.
• 198Au has several medical uses. It has been used as both a diagnostic tool and a treatment option for cancer,. –As a diagnostic tool, colloidal 198Au is injected into the affected organ. Normal cells will take up the gold colloid, but tumor cells will not. Therefore, an abscess will show up as a “cold area” on a scan. –As a treatment option, gold is intended to provide localized irradiation and can be implanted or injected into the affected area. When implanted, the gold “seed” offers an advantage over other materials in that it can be left in place due to its short half-life (2.7 days). As a colloidal injection, 198Au has been found to produce improvement from a wide variety of cancers. Figure 4.79.1a and 4.79.1b, respectively, show squamous cell carcinoma (cancer) on the lower left eyelid of a cat and the eyelid 6 weeks after implantation of 198Au seeds. Recent studies have shown the effectiveness of 198Au nanoparticles and nanodevices in reducing tumor size in mice while minimizing radiation spread to other areas,,. 198Au has been studied and successfully used as an anti-inflammatory (a substance or treatment that reduces the body tissues response to harmful stimuli, such as swelling) for improving arthritic conditions,.

Isotop emas lainnya

¹⁶⁸Au, ¹⁶⁹Au, ¹⁷⁰Au, ¹⁷¹Au, ¹⁷²Au, ¹⁷³Au, ¹⁷⁴Au, ¹⁷⁵Au, ¹⁷⁶Au, ¹⁷⁷Au, ¹⁷⁸Au, ¹⁷⁹Au, ¹⁸⁰Au, ¹⁸¹Au, ¹⁸²Au, ¹⁸³Au, ¹⁸⁴Au, ¹⁸⁵Au, ¹⁸⁶Au, ¹⁸⁷Au, ¹⁸⁸Au, ¹⁸⁹Au, ¹⁹⁰Au, ¹⁹¹Au, ¹⁹²Au, ¹⁹³Au, ¹⁹⁴Au, ¹⁹⁵Au, ¹⁹⁶Au, ¹⁹⁷Au, ¹⁹⁹Au, ²⁰⁰Au, ²⁰¹Au, ²⁰²Au, ²⁰³Au, ²⁰⁴Au, ²⁰⁵Au, ²⁰⁶Au, ²⁰⁷Au, ²⁰⁸Au, ²⁰⁹Au, ²¹⁰Au

Pelajari

Kimia inti Simulasi peluruhan ¹⁹⁸Au Bagan nuklida