Glass composition and method for producing glass composition

A glass composition used as a standard sample for an element analysis, comprising, as main content components, by mass %:

• a TeO2 content percentage of 50% to 80%;
• a Bi2O3 content percentage of 0% to 30%;
• a WO3 content percentage of 0% to 30%;
• a ZnO content percentage of 0% to 30%;
• a BaO content percentage of 0% to 30%;
• a GeO2 content percentage of 0% to 30%;
• and
• a Ga2O3 content percentage of 0% to 30%, wherein
• the glass composition contains an additive target element being an element different from Te, Bi, W, Zn, Ba, Ge, and Ga, and
• the additive target element is contained by 1 mg/kg to 1,500 mg/kg per one element.

A glass composition used as a standard sample for an element analysis, comprising:

• at least any one of additive target elements being introduced to main content components, the additive target elements including:
• Si4+ of 1 mg/kg to 1,500 mg/kg;
• B3+ of 1 mg/kg to 1,500 mg/kg;
• P5+ of 1 mg/kg to 1,500 mg/kg;
• Li+ of 1 mg/kg to 1,500 mg/kg;
• Na+ of 1 mg/kg to 1,500 mg/kg;
• K+ of 1 mg/kg to 1,500 mg/kg;
• Mg2+ of 1 mg/kg to 1,500 mg/kg;
• Ca2+ of 1 mg/kg to 1,500 mg/kg;
• Al3+ of 1 mg/kg to 1,500 mg/kg;
• and
• Sr2+ of 1 mg/kg to 1,500 mg/kg.

A method for producing a glass composition, the method comprising:

• i) a step of immersing a crucible and a tool for melting in an acid solution for 1 to 24 hours for cleansing;
• ii) a step of rinsing the crucible and the tool for melting with purified water;
• iii) a step of drying the crucible and the tool for melting;
• iv) a step of obtaining a mixture by mixing main content components and one or more additive target elements in the crucible and melting the main content components and the one or more additive target elements for 30 minutes to 8 hours while stirring the main content components and the one or more additive target elements with the tool at a temperature of 800 degrees Celsius to 900 degrees Celsius, the additive target elements including:
• Si4+ of 1 mg/kg to 1,500 mg/kg;
• B3+ of 1 mg/kg to 1,500 mg/kg;
• P5+ of 1 mg/kg to 1,500 mg/kg;
• Li+ of 1 mg/kg to 1,500 mg/kg;
• Na+ of 1 mg/kg to 1,500 mg/kg;
• K+ of 1 mg/kg to 1,500 mg/kg;
• Mg2+ of 1 mg/kg to 1,500 mg/kg;
• Ca2+ of 1 mg/kg to 1,500 mg/kg;
• Al3+ of 1 mg/kg to 1,500 mg/kg;
• and
• Sr2+ of 1 mg/kg to 1,500 mg/kg;
• and
• v) a step of casting the mixture in a mold and performing slow cooling.